Usually 'tolerance' is very poorly defined. Someone saying some vile shit? Time to physically attack them. So one intolerance is thought or speech, but the resulting intolerance is violence.
In some cases that's fine, but people seem to think just saying "paradox of tolerance" is a tool that lets them strip others of their humanity without engaging in any actual ethical or philosophical discussion.
It's words on the internet, though, so it's not like most people will have a chance to actually test their poorly considered position, but they do end up saying some vile shit in defense of others at times.