[hbn]

Well for one thing Twitch has the advantage of being primarily gaming-focused, whereas YouTube is at its core a generic video host with no particular focus.

But YouTube has also completely destroyed their entire concept of having a "YouTube community" over the years. There might be something of various creator communities in various niches, but the heavy censorship, mess of a comments section that does everything in its power to halt any form of conversation, leaving only spam and idiots in most comment sections, etc. left it with nothing of a community, or any real creator/consumer dynamic.

YouTube no longer has private nor direct messages, so if people want to communicate they have to do it on another platform. It's also just a bit of a mess with the transition from the original idea of "everyone has an anonymous handle" to "every must have their Google+ profile linked and use their real name" to "Google+ is dead and now some people have silly handles and some people are real people." The whole thing adds up to make for a place with no coherent community.

[astrange]

The YouTube comment algorithm actually totally changed around 2019 because of everyone complaining about it. It's now very strongly focused on "wholesomeness", so if anything it's not stupid enough.

[Zuiii]

The only wholesomeness I see are kind-worded scam messages. I can't say I feel sad for youtube. They wanted it to turn out this way.