Here’s my counterpoint: you may think what you do and say is innocuous, and it may very well be innocuous… right now. Who knows what people will think about any given topic in ten years. Who knows who’ll be in charge then, or how much power they may have to deal with “them”. I’m pretty sure I remember the dictator of some central-Asian former Soviet republic going around arresting dentists, so nothing is too absurd to consider IMO. I also don’t do anything I think others would find particularly damning, but I prefer to maintain a healthy buffer between my online self and my meatspace self. But I do genuinely wonder if I’m being unreasonably paranoid sometimes.