So how do shop owners discriminate, then?
How can you discriminate against someone for being gay, if you don't know they're gay?
And, if you do know they're gay, how do you know if they've chosen to embrace that lifestyle or remain celibate?
Let's say a hypothetical gay customer walks into a shop, and is obviously super gay.
Are you saying that it's not okay to discriminate against him, because you can't be sure?
If so, in what situation is it okay to discriminate?
Do you have to catch a gay couple fucking in the frozen food section?
I'm not sure how - practically - what you're discussing makes sense.