Honestly, that's where I get some of the most use out of YouTube, the recommended videos main page. Sometimes I'm annoyed they aren't showing me enough variation based on my subscriptions and past likes. I'm not sure why I'd want this. Sometimes I'm watching a technical presentation/talk by someone and I'll get other talks of theirs on the recommended videos for that video page, which is useful, or followup videos on…
And it's fine, they need to make money, I just think they're optimizing for profit and not attention these days.
I know this is not mainstream view. Go and check anecdotally right now. It's worth running some experiments and seeing if the claim had veracity.
It's currently unsubstantiated but I believe it's verifiable since >0 ads monetize better than 0 ads.