The important questions are: Are the employees wearing their masks correctly? and Are they reminding customers to wear their masks correctly?
I still run into employees who have their mask pulled down to their chin. If I mention it, the responses I get are either:
“It don’t do no good, anyways.” (with almost that exact wording, every time)
“Well, we had a woman/man/customer the other day who couldn’t breath and collapsed because she was wearing a mask.” (Note that people who have difficulty breathing – and, I assume, some other health conditions – shouldn’t be made to wear a mask.)