And we're back to pointing out that cake designers often refuse customer requests that conflict with what they're comfortable with. I strongly suspect that you are perfectly fine with a baker refusing to design an erotic cake for a bachelor party and pointing out what they can do instead.
So unless you want to open yourself up to an obvious double standard, that argument doesn't work.
That has NOTHING to do with double standards. Double standards is when a baker says: You are straight? Come in here let's do business. You are gay? Get the fuck out, I'm not doing business with you.
If a baker refuses an erotic cake in the shape of a dick or boob, AS LONG AS he refuses to do such a cake for EVERYBODY, black, white, gay, straight, there are no double standards involved. If he does a boob cake for a white dude but refuses to do it for a black one then that is TOTAL double standards.
Don't try to use logic or concepts like double standards to win this argument cause it's a dead end for your side of the argument my friend