I was a child of the 60s and I remember hearing about places in the South where black people could not eat at a restaurant counter because they were black. There were "whites only" signs and only whites could shop at that shop or drink from that water fountain.
Now we have "masked only" stores.
That is discrimination.
The grocery store I go to (Stop&Shop) has a "greeter" at the door, said person makes sure you have a mask on, if you don't there's one woman in particular who will literally chase you all over the store while yelling, miss, miss, sir sir, you need a mask, (the other greeters don't care!) Anyway, I don't cover my nose, I don't believe in these stupid masks, anyway, I went into said store a few weeks back and Karen happened to be the greeter....(I've been going to this particular store for at least 15 years and this is not the first time this woman has seen me walk in with the mask below my nose, but I digress) she followed me through the produce section saying, excuse me, excuse me, why do you bother wearing a mask? I turn around and ask her if she would prefer I don't wear one at all and she actually said yes, why bother, I was taken aback, I expected a different response, soooooo, I took it off, walked around the store, checked out and no one, no one said a damn word, I was stunned to be honest, I thought for sure some other Karen would say something, but, nope, no one said a word.
That is discrimination.
Choosing to wear a mask or not is not the same as an immutable characteristic as skin color. "No Shirt, No Shoes, No Service" signs are not discrimination against any group since the person who is turned away can come back later wearing those things and be welcomed in. How are masks any different?