Eventually, I will own one. Some day. Mostly because they seem to be ticking most of my boxes -- comprehensive backwards compatibility within Switch ecosystem, and a good update in terms of power. Only major miss is OLED screen. That said, I still need a killer app. Or perhaps even two.
I'll cave earlier if there's an amazing-looking Mario 64-style game, and also maybe a really compelling Zelda (not BOTW-inspired) OR a Metroid Dread sequel. That would be what it takes... if it launched with those 2 games, I'd very likely buy it at launch.
Mario Kart and Metroid Prime 4 (not that we even know when this will be out) do not even come close to counting as games that I personally must play immediately. And it took until Metroid Dread for me to get the original Switch. Since I doubt they are straying from BOTW Zelda, and it might be a minute for Dread 2, and their Mario games aren't as good as 64 these days... it might be awhile for me to get this system, too.
But if in some amount of time (2-2.5 years?) we have Mario Odyssey 2 and Dread 2... and also I can finally get to MP4 & Mario Kart, at that point, it's must-buy for me.