God forbid you offer technical advise or attempt to explain a complex subject and the answer somehow becomes extremely political. The biggest example I remember is the folks at r/programming really REALLY want WASM to replace JavaScript. I, being a long time JavaScript programmer, explained how WASM isn't replacing JavaScript for technical reasons and the stated goals around that technology. Immediate emotional failure on an epic scale. I could have said something about harming children and would have been less reviled. This isn't even a political subject. I imagine an actual political subreddit being quite comical.
People get emotional online for all kinds of reasons. PRO TIP: there are many people online that cannot follow a conversation, possibly their own conversation, or who have trouble with basic reading comprehension. ANOTHER PRO TIP: echo chambers and conformity are very real qualities that easily feel threatened for nonthreatening reasons.