This is a ban within a State licensed activity. It is (supposedly) not a constraint on free speech.
For now. The federal government is now considering silence on the issue of gay pride to be disapproval.
Slippery slope and all that.
2 other states are also trying to adopt this law.
It is a constraint on free speech. A person with a state license cannot practice their trade in a manner that they feel appropriate for their clients. They must practice the way the state requires. We are losing our freedoms little by little.