My conclusion is that it's basically entertainment, with very little of what I'd call high-quality useful information that deserves further examination (unlike a lot of HN posts, in contrast). I also notice something of a Tik-Tok approach to video being implemented, which is not surprising given Tik-Tok's success (and makes one wonder who exactly it is lobbying so hard for a Tik-Tok ban, and whether it's just a commercial competition issue more than anything else).
As far as the recommendation algorithm, it appears to be a siloing setup - look at content of one particular flavor, it gives you more of that flavor. A 'flush settings' or 'forget browsing history' or 'reset to defaults' button would be useful, if probably not what advertisers want in terms of delivering to target audiences. I suppose setting up multiple accounts is something of a solution, although too much effort to be that interesting.
In terms of news reports, it's broader in scope than traditional corporate media outlets, so that's a plus in its favor. Reliability is perhaps similar (i.e. low).