“Well after all this publicity I don’t think he needs to worry about a gay clientele anymore.”
Au contrare! They will continue to try and disrupt his business.
I guess I'm making a difference between those who will go there to cause trouble and those who just want a cake. Because of the Court decision he'll probably attract gay troublemakers for a while but I doubt he has to worry about gay customers.
Since SCOTUS didn’t rule on his right to not accept anti-Biblical cake designs, I guarantee you homosexuals will come in to demand a cake. Assuming this, as I don’t really know if they can afford the protracted legal case.