I wouldn't bet on it. I still see plenty of signs like that and haven't worn a mask in over a year. Corporate CYA is a very different thing from receptionists who believe in masks. Show your face, if they hand you a mask use a line like this, 'You guys are still doing that? Wow. It's like being in the past.' not aggressively just like surprised, but take it and stuff it in your pocket on your way back to your seat. If they say something else pull it out and wave like oh yeah i forgot and then put it back in your pocket after you walk by.

Every little push towards freedom is one less push the next guy has to push to be free.