Thinking about it, I definitely misrepresent myself online 100% of the time, as I never say who I am. I do say a lot of things, but in a generic sense, enough that it would be hard to pin down who I actually am. I have a deep and irrepressible sense of distrust for the state, for decades, despite what I do for a job. So instead, I have an online persona that does indeed reflect my values, but is separate from the public facing person you might know.

Unless you’re limiting yourself to very terse responses or having someone else (ideally random) write all your online content, you’re still very much at risk.