Yeah, it's not. From my experience in the restaurant that I visit (in LA) I see maybe 1/4 or 1/5 that still wear them.
As a parent of a pre-K kid (for those who don't know, daycares and schools for young kids are grand centrals for microbes) I no longer get sick from covid, but I can still tell I got it, because there are specific symptoms I'm still getting from it that are quite annoying. One of the worst is that for few days I feel just extremely tired. If I have nothing to do, and I can just sleep that time off. Working during that time is no fun.
So even if mask reduces chance of getting that by half, it is still worth it. It also would help employer as being tired at job one won't get as productive as they normally could. And this is just my experience, and other people have it worse.