Removing shoes at airport security is a lot different to me than wearing a mask. Removing shoes is a quick precaution that takes a minute, wearing a mask through every minute of your day is a much bigger thing. I just don’t see people complying with mandated masks for the rest of their lives. Once the pandemic eases and spread isn’t as rapid, people will move on, just as they did after the Spanish Flu.
As a previous poster said, maybe they'll become normalized for wearing when actually sick, and I agree that some people will probably continue to choose to wear them longer than others and certain places might require them for longer, but forever? No.