Just because of the thumbnail stuff doesn't mean your channel dies.... ...just means 0.3% won't get the same content as everyone else. (Unless there's something I'm not informed of, which in that case, please do share with me what that is)
There's a LOT of stuff that's happening with YouTube, such as demonetization of videos for no reason, subscribers not being notified about new videos, etc., not to mention the fact that the sub feed doesn't even work like it's supposed to, and they refuse to address these issues.