A lot of the suppositions are done with impossible to happen stuff, like the sun literally disappearing, or collapsing into a blackhole with no added mass (a sun mass blackhole would be stable, but I don't know how one could be created).
If it disappeared, then we'd still feel even gravity for those 8 mins, as the effect of gravity propagated at the speed of light. If it somehow magically became a black hole, we'd still orbit it the same even after 8 mins, but losing all the head would eventually kill us.
The expected explosion wouldn't be what makes the earth uninhabitable either. The sun increases in luminosity by ~1% every 100 million years, and it's estimated that between 700 million and 1.5 billion years the surface of the planet will be too hot for liquid water. An astronomer also says photosynthesis would be impossible in 500-600 million years.
I've spoken with plenty of feminists, vegans, some trans people, and several right wing constitutionalists or other right wing identity. Almost every vegan I've talked to in RL was very pleasant and I had to know them a while or go to lunch with them to even find out they're vegan. Trans I've never had a problem with, and occasionally reminded me their preferred pronouns in a very polite way (actually our mutual friends usually did instead). Feminists I've only found TERFs annoying.
However the constitutionalist? I got in arguments with him about stuff like whether people should be liable for animal abuse (he claimed animals don't have a soul so no punishment should come from harming them). He also acted like women were too emotional, but every time we got into a discussion with something he didn't like he would be nearly yelling. If asked to be calm he'd angry claim not to be logical, not angry/emotional. He was the one we had to walk on eggshells around, while also being the main person doing "wife bad" or other misogynistic jokes.
While that's one example, I've met many others who like to be mean then retreat to "just joking" or "That's how I grew up", while the people you claim are more annoying are more likely to adjust to the feelings or likes or dislikes of the person they're talking with.