I’m relatively moderate politically but certainly not anti-diversity, but as a hypothetical example, lets say you’re a new urbanist with a full on ban cars mentality, if I suggested say, daylighting intersections and offering cheap/free parking lots instead of street parking, that opinion might be downvoted to oblivion / mods may ban me because I don’t follow that orthodoxy. If you’re someone who enjoys the conversation and rebuttal portion ( I do, its something I enjoy about reddit), getting 100 people into a post who all think the same is boring as sin. Honestly, if for example on reddit, r/conservative wasn’t such an echo chamber, i’d contribute on that subreddit too just to hear difference of opinion and try to understand the logic behind certain viewpoints.
Slackware, probably in 1997. My cousin lent me his copy, had like 100 floppies for the install.