Alright so two things. 1) In the American constitution, Freedom of Speech only applies to the Government. I.E you can't be arrested for speaking out against your leaders, or their policies etc etc. Not to private businesses, which Square Enix is. 2) Square Enix is a Japanese based company who doesn't have to abide by the U.S constitution even if the first amendment protected our speech in the private sector.

Also Free speech is the first thing conservatives tend to say after they say some f'ed up racist stuff.