I'd say content is trivial, but having the sheer variety of content that youtube has is not. Odysee has some decent stuff on there- even some decent original stuff that isn't just a mirror of someone's youtube channel. But it's not going to have the same niche, specific content I might look up on youtube.

I really like their business model, but unfortunately did not really use curiositystream in the month I tried out the superbundle. Some of the documentaries were alright, but it wasn't really my thing. I may return to nebula if google figures out a way to axe adblockers for good, though

Yep. I doubt there were that many people using adblockers back when you only had one skippable 15 second ad at the beginning of a video. But when you have 1-2 ads every 10 minutes, on top off all the premium popups, it's just unbearable.