Well this is as I feared : in the future the multiplatform games will get parity deal by Sony to ensure no public outrage.
So if dev want to release at Sony platform, they need sign the deal : the content must same across all platform.
These deals already existed for Microsoft (and yes, Sony) and all the good they did in cases like this was for the port for the nitpicky console maker to be just skipped over.
In this case, the developers designed replacement CGs for their visual novel to replace the original CGs with god ray overdose for the PS4 version, but offered a patch for the Switch version to include both the original CGs and replacement CGs.
That said there's cause for cynism that the developers didn't really have a choice in the matter and that the god ray CGs
had to be replaced in a similar way modern console lot check sometimes allow bugs that would normally fail it as long as updates to fix those bugs come soon enough in the launch window, and developers are expected to uphold this commitment or face repercussions, either the withdrawal of the game from sale (this almost never happens but then again Super Seducer sets a precedent for a very similar case) or much more serious contractual legal sanctions.
It tries to save face for Sony with minimal real effort from them (instead passing the bucket to the developers) and ties with that Sony Europe statement that "it would be boring if all game versions were the same" that implies the censorship is new valid worthwhile content (very hard to rationalize that for white ink blots covering 70% of the screen) and consumers should "look forward" for this new content (you can see similar rationalizations for Fatal Frame V, where gravure model costumes essential to the horror plot "emotional trauma caused by that job" were replaced with Nintendo series cosplays you're supposed to "look forward" for, nevermind that it no longer makes sense -- not that the content cuts make much sense even from the feminist perspective) so they urge developers to
create new content for the censored parts to "replace" them.
We know how well forcing developers to develop new exclusive content for a late, inferior, compromised console port worked for Microsoft's Xbox 360 and later the Xbox One, even in the US, their home market. Developers just ended up skipping the port altogether. Not that the new unpredictability of the console lot check makes it that much appealing anymore, even for games not primarily targeted by this "western standard", like horror, arcade, shooters and role-playing games very outside the "otaku wankfest" demographic this policy is "saving the world from".
We all know how console leaders went in Japan.
First it was the Famicom, the Super Famicom, then Nintendo had their moment of sheer retardedness where they started telling Japanese people they won't put the CD drive they're asking for, that they're incompetent developers that should be weeded out with obtuse to develop for hardware (and as it turned out, Nintendo's internal development teams were still not "incompetent" enough to cope with it), and that they have this announcement at Spaceworld of a "Dream Team" of developers that are all westerners. Unsurprisingly, Nintendo never really recovered from this, except with the Nintendo DS to some degree.
Sony had the whole support for them in the PS1 era (even with indie programs) and then PS2... then at some point something went really wrong with the PS3 with them never really listening to developer input with the Cell architecture. It made the HD transition much more brutal and expensive for traditionally mid-budget Japanese developers who preferred to support the PSP. There's no real replacement for that, the PS Vita having done major mistakes of its own, so developers flocked for mobile development, or otaku games on the PS Vita. A lot of the major third party support for the PS4 (Yakuza, Dragon Quest XI, Final Fantasy VII, Monster Hunter V/World, Street Fighter V) was directly bankrolled by Sony because it wouldn't have happened otherwise following these trends, but bankrolling can only take a console so far.
With Microsoft messing up their chances in all three console launches in Japan in various ways, what remained was Nintendo's Switch that shares a lot in common with handhelds (to drive the point home, it even reuses parts of the 3DS OS) but still provides a natural continuation of what Japanese developers were looking for, even discounting the otaku fanservice games they were doing to keep the lights on. It's no surprise they went out of their way to
court those developers (D3Publisher does more than just Omega Labyrinth and Oneechanbara but the Simple series too, the developer for Omega Labyrinth was the same behind the Final Fantasy 3/4 remakes on DS, and so on...) It's very laughable how Sony is squandering their exclusivity on console VR in Japan, and whatever market position they bankrolled so hard, with policies such as making the certification process (even ignoring what kind of content gets cut) as inconvenient and money-wasting as possible for Japanese developers, and so obvious it's personal vendettas (ideological, even?) at play rather than anything well thought to secure a market position
anywhere.
Even if Nintendo plans to scale down their laxer content policies down the line, it won't be for a while. They would never pass on this chance. Unlike Sega (who relaxed the Saturn censorship for a short while then reinstated it) they are courting those developers in more ways than just the content policy itself.