Yet so many people flipped out when a business wouldn’t design a custom cake for a same-sex couple.
Which is it? Can businesses enforce their own rules and values on their own property or not?
As far as I understand wearing a mask doesn't fall into either category so the gay cakes thing has very little to do with this and comes off as whataboutism.
Morality is not the same as legality.
Masking helps prevent spread of illness.
Legality should follow morality, but the reverse often happens.
The grandparent comment didn't appear to suggest what you're clarifying question asserts.
It’s very easy to have a belief that businesses should be able to pick who their customers are or that they should be forced to serve everyone, but any opinion in between is very difficult to make logically consistent.