In order to have fruitful discussion, what do you mean by "free speech"? And then, where is your definition of free speech practiced?
fortunately in this case it's very simple.
meaphor's (and many other's around here) definition of "free speech" that is notable and should be protected is "anything that harms another person" - whether that harm is quantifiable in terms of real-world impact due to social forces, or harm done to the target's mental or emotional well being.
what is NOT free speech to people like metaphor is "anything that metaphor disagrees with."
so for example, here's what it's OK and not OK to say over and over again day in and day out to a class of high school students:
OK: that gay men should be castrated because they're a plague on humanity and an affront to god - because that quantifiably harms people.
not OK: if a person's sense of self expression is to identify as a different gender it doesn't really matter because who gives a shit how people self express - because metaphor disagrees with it.
so what 'free speech' is or isn't can be simply calculated by figuring out whether anyone is harmed by the speech (it's free speech) or if it's totally innocuous but metaphor doesn't personally like it (it's not free speech).