"Hate speech is not free speech" is a remarkably inane statement.
If you are against hate speech, you are against free speech. Opposing free speech is not an unacceptable position however.
A person who supports placing legal limits on expression because they offend a group, religion, political party, etc. can't sincerely claim to be an advocate for free speech. Better to avoid the doublethink and stop defining free speech as speech that you approve of.
The current state of reddit includes a large group going around trying to be offended and then bringing the outrage back to home-base so the group at large can also get that outrage-dopamine kick. For their troubles the person who found the offensive comment or post gets some internet points and their group membership is solidified.
It's fascinating in the sense that it happens but I don't think it's reasonable to lurk in social groups you don't belong to and complain about the local norms.