Over the decades of joining and leaving forums like this, I've found that there are always a handful of people that love to troll. This was true of a cycling forum I used to be on in the early aughts. Inevitably, I learn to ignore them and engage with the those that might be able to part with the wisdom I seek. What I also realized is that phrasing questions or opinions in the right way so as not to come off as smug/aggressive/troll-like is something learned. If you have to deal with prickly clients or consultants in the "real world," you learn how to communicate in a clear manner that can be informative and diffuse a situation.
However, on forums like this, tone can be hard to determine. And oftentimes, sarcasm isn't readily apparent. That too is a skill that you can't get over-night. It's like the on-line discourse of Gen-Z and Millenials that think punctuation like periods and exclamation points and thumbs-up emojis are like a slap across the face.
At the end of the day, social media has removed the veil from many people's abilities to be calm, respectful of others' opinions, and being tactful.