It's about turning around rhetoric about Taiwan towards the USA. I honestly don't see a reason for Chinese people to articulate the nuanced position, like you suggest, of condemning Texas for being 100% Hitler to the USA's 99%.

It’s also about the HK protest that had a nativist characteristic against mainlanders but westerners seem to think it’s all about freedom and democracy. These are just using western rhetorics against themselves

no but it's cool that Texas is flirting with secession and civil war

If that civil war does happen, then the real international community gets a nice little treat, and it'll be like 1917 again