I've been doing that more after joining the Fediverse but there are a handful of exceptions. One is an absolute nutter who spreads disinformation like it's butter, and I can't bring myself to block him because while I'll never be able to make him stop, at least I can advise others that a) it is false information and b) he is immune to evidence. (It's an unusual situation where what he says is pretty easy to refute). So I can also help people not to waste their time talking to him (or at least to go in forearmed)