I don’t in this instance. I hate the bogus mask rule and I ignore our mayor’s edicts in that regard. But if I enter another’s property and they ask me to put one on I will. It is their property and I will respect their rules.
The problem is that if there is no pushback, most places will continue to require masks. I think it is better to make them feel uncomfortable enough with the requirement that they eventually start bailing on “required” and go with “preferred”.
If they weren't doing it because of government edicts, I might be tempted to agree with you. The "private property" disclaimer is void on this subject.