I was curious about the posts mentioned so I took a look at your history and can kinda see why. The Linux one didn't make too much sense to me but people were generally nice to you, although understandable skeptical since you're talking about hardware not working. Honestly you had a bit of a meltdown in that thread, which I think contributed more to the down votes than the initial opinion (like you said, text brings out a worse version of yourself).
The political ones, I mostly pieced together genecide denial (?) which has generally been very unpopular here. To be fair, that was more than a year ago, although what was unpopular then has aged even worse, what with people in Europe getting arrested for pro-Palastinian views and such.
I'm not saying the behavior of mods and such were justified, of course, just... y'know, two sides of the story. You're in the right to express your views and seek discussion, but others have an equal right to call you out on it-- especially if you get defensive and rude over polite, reasonable responses.
But that's just my two cents. I only ever comment, and I've had moments with people being rude or misunderstanding my intent. It happens, as social media is just that way.
None of the 401k options I saw listed had an index without since the AI bubble included. I'm going to look again soon, but they're often like 30% in tech. I don't think I can manage it manually, either. :/