Just throwing this out there for those who bring up youtube view count as a reason why something may or may not be doing well, keep in mind that for the longer-form content including TTE, Frame Trap, Podcast etc. the RSS feed plays a part in this. I just recently switched over from having youtube playing during my work commutes (unlimited data, don't worry lol) to using a podcast app to consume this content. I'm sure there's many others that don't goto youtube for this stuff anymore, so don't put so much stock into youtube view counts.
As for the TTE length talk, imo it's pretty much as good as it can be. Make it longer and more people will complain about having to consume so much at once, make it shorter and it would feel like they have to make too many cuts during important scenes (especially combat, that can already span several episodes as it is). In the end, no episode length is going to please everybody, and I'd personally rather not see them have to take the time to edit important parts into a video that alters the vibe during the game.