The Federal mask requirement only applies to interstate transportation, airlines, buses, and Amtrak. Other mask requirements are local regulations, locally enforced. Here in Western Washington the state and local rules are now the fully vaccinated can go without masks. However, mask compliance always has been very high here, and most people remain masked, despite well over 40% of the over 16 population are now fully vaccinated (2shots + 2 weeks). Well over 60% have had their first dose.
You are conflating different things, an absolute Federal mask requirement that applies to a very, very limited range of things within Federal purview, interstate transportation, and general mask requirements which are under state police power and vary widely.