I meaaan... all this can be true and "progressives" can still end up doing a lot of the classist ableist etc that they say is not okay just because it's someone they don't like. For example "Trump has a small dick!" Something you would hear in the manosphere, what does that have to do with him being a terrible person? "Ben Shapiro is short lol!!! Gnome!" "Women are repulsed by Republicans." Ok? So are most normal humans? It's like the flip side of "women love this!" Which is a bit weird to say.

For fat phobia, I think it's maybe imprecision in the words. We know from psychology it doesn't help shaming people for their flaws. We shouldn't say it's an okay thing, but saying omg this dude is a fat loser (about a republican) can be pretty hurtful for the chill person who feels like a loser because they're fat. Society right now is in a place where being obese is extremely easy and being healthy is not, like extremely addictive food literally designed to keep you hooked, car-centric design, lots of unnecessary stress and division, and some people just have health problems like chronic pain or metabolic misfunction. A lot of these are used as excuses, and I think if someone is overweight and they say well what can I do society is messed up, that's not right. But it's so easy to get into bad habits or be addicted to food, that I don't see it as a huge moral failing anymore, just like hey how do we help you stop this thing that's harming you.