The problem with this reflexive appeal to it being private property is that it is really not their decision. The State is forcing them to be mask police. If they do not enforce these ridiculous and unlawful mandates, they will be shutdown, or fined into bankruptcy.If it really were up to them, I'd back their decisions somewhat, although everyone paying attention understand the huge social pressure the media and other agents of the police state are applying to make sure that everyone falls in line like good little sheep.
I think resistance to this crap is fully justified.
Yours is an excellent point .... along with the ginned-up excuse that mask- wearing is “to protect other people (from you)”