Honestly, the first thing that I thought about was what if the sign had a slur word. Sure freedom of speech means say what you wanna say, that doesn't mean people aren't gonna sock you in the face.
The problem with free speech is probs that what people are really fighting over is who gets to control and define what "free" speech is. Only in an anarchist society would free speech really be as you described - say what you want, but be prepared to face the consequences of your words (and actions). Without the protection of government and socio/economic hierarchies, bigots wouldn't feel quite as invincible while they spew hate and oppression.
if it was made by a left wing gay man then i guess they are both gay and dumb because they inadvertently made a comic that pushes narratives used to defend homophobia
No offense but based on what I'm hearing you need to study your history of censorship and left wing support of free speech in response to that censorship. And I mean government censorship, not reddit banning a right winger and them crying about it.