This is really only if you make commentary style of videos. Which is a huge part of what YouTube is now but still not the only thing on there. There’s skits, there’s not a lot of it, but still people’s films, there’s just something interesting that happened and you had the presence of mind to film it, there’s animation, I think there’s a degree of citizen journalism on there too though I’ve ot really seen a lot of that. That would be maybe commentary adjacent but still slightly different than just a person and a topic.

That said you could do all of those solo, with varying degrees of difficulty.