I think you're about 5ish years out of date.
Most of the sites on cameras, gadgets, games, cars e.t.c. are dead or dying and have been replaced by youtube channels, many of them run by hobbyists.
Most of the sites on cameras, gadgets, games, cars e.t.c. are dead or dying and have been replaced by youtube channels, many of them run by hobbyists.
SEO, content farms and content marketing are killing the open web and Google is enabling it, perhaps because they're ok with the web being replaced by 4 or 5 websites, Youtube being the biggest of them.
There's still plenty (too many?) commercial websites - most that include their own YouTube channel - trying to compete for eyeballs by repackaging the same preview/review/press materials that companies send out..
They're no longer the only game in town though, that's for sure. I don't disagree that many hobbyists (definition up for debate) can compete on merit for the audience, which is awesome of course.
useful content? which ones? average youtuber incentives (be it through YT or Patreon) tend to just be a community private server on Discord to talk to the creator with. Or cut content that they couldn't air on youtube anyway (e.g. extended commentary on a video that would be de-monitized otherwise. There's way too much competition to lock out signifigant part of a Youtube's channel's content.