His argument was "No one who advocates against hate speech laws doesn't want you to have that freedom" -- while saying "No one.." is always dangerous (as there is always someone, somewhere), I'd say it is fairly common in my experience for people in favour of laws against free speech to also think companies like Twitter should be forced to also allow free speech.
People who say "no one" or "everyone" do not mean 100%. That isn't how English works. It's why English provides qualifiers like "absolutely no one", or "100% of people".
Just like if I say "everybody likes ice cream", you and I both know that there's somebody, somewhere who loathes ice cream.
