To be fair, most of the YouTube criticism of Doctor Who lately has been rubbish. A lot of it's a sad holdover from the anti-SJW/Skeptic community era, with lots of clickbait titles and whipping up outrage, but very little analysis of the genuine issues. There's also been some cross pollination with the QAnon style hopium the Fandom Menace has been flogging lately, with people saying Chibnall is totally going to be fired any day now and the show is totally going to be cancelled, despite there being no hard evidence of any such thing occurring.
I think what Jay's trying to say is that there is a lot to criticise about the Chibnall era that isn't just "GRRR SJWs, forced diversity, woke PC blah blah blah". There are good criticisms to be made around that stuff, and I think Jay did a good job of breaking down just how lazy Chibnall had been in engaging with hot button political issues. But most of the discourse around it has been KiA/NoBS-tier and it's burying a lot of valid criticism.