On the one hand you have to be more careful. On Reddit I could regularly purge my account and that would keep privacy from most low hanging fruit. Allowing me to share a bit more than I normally would.

On the other hand you know this going in. Reddit used to be more private but dickheads like the Pushshift guy would try work around that and then offer to honor privacy, but ignore requests etc. So it BECAME more complex.

Though honestly anything you type should be considered public record and something you would be willing to say at a coffee shop. However I have had people select context and try and dox me. So I try and keep it just vague enough.