When Ana first joined TYT Cenk did the first hour by himself, and it was the more serious news hour. Ana would only do the second hour with Cenk and that was when they would talk about more 'fluff' stories like "real life anime dolls" and Britney Spears' p*ssy being exposed. Ana had her own show called The Point, but it more of a roundtable discussion show and Ana was just the moderator.
It wasn't until about 2018 when TYT canceled all of their non-news shows and because strictly news centric that Ana started doing both hours of the main show, and that's when we started seeing more of her wild takes and general bitterness.
Ana was probably always like that, you just didn't see it as much, and it got exacerbated by things like Trump fukkery, Covid, Dave Rubin/Jimmy Dore fallouts and people like Hasan leaving TYT and making more money on Twitch