I don't want to offend anyone by the term "generic", but by that term I mean the typical Youtubers who generate the same repetitive content over and over and over and over and over again and it's usually content that is made with little effort and often with filler, such as unnecessary jokes. For obvious reasons I won't even mention specific names.
I for example use Youtube exclusively as a learning platform, I can't say I'm a "fan" of any Youtuber because I'm not really there to watch the weekly/daily video of a content creator, I just jump in and if I want to learn about something I just watch it and that's it, I don't get distracted watching anything else.
I hope no one feels offended because it's not my intention but it really makes me curious how some Youtubers can earn thousands of dollars in donations in streamings where they just play a video game, and when someone donates they don't even pay attention to it, I don't even think they need the money.
It helps people relax and feel good, basically. In a similar vein, there's no informational content in a sitcom and yet they continue to be made. Some people enjoy crocheting or playing guitar hero, even though they might not be learning much from them. Personally I like a good blend of entertainment and education, but I also don't really try to justify to myself why I might enjoy one person's videos over another's, it might even come down to the voice or some other entirely subjective factor really.