The writings from past pandemics where masks were worn, both distant and more recent has shown that even when mask wearing becomes very normalized, eventually most people go back to cultural norms. A pandemic isn't enough to shift them, it would take more enforcement than that.
I wore headcoverings and had all but hands and face covered for a decade before choosing to stop, yes, at first one can feel naked without a simple thing (that was actually part of my motivation to stop, I shouldn't feel naked in my own home with a knock at the door just from not wearing a headcovering), but generally - as in the article - it can be as simple as not seeing the point one day or forgetting one day and only realizing once well out the door. For me, stopping headcoverings took conscious steps, but the first time I left the house in just a long shirt and leggings (rather than wearing a skirt as well), I didn't realize until I was at the bus stop. There was that moment of 'wtf have I done?' anxiety, but as I looked just like anyone else, it quickly passed. I still mostly wear skirts now as only needing one measurement makes buying them far easier, but I no longer feel naked in one that's just below my knees rather than at my ankles.
Months from now, the same will start happening with face masks on. Once they're no longer enforced, the social stigma for not wearing them will fade, and most will stop. How those who need to continue on is in question - there were stigma issues for those medically recommended to wear masks pre-COVID - but I don't think this is any 'new normal'. At least where I am, masks are pretty much only worn in shopping areas, shops, public transport, and medical places - oh and house viewings. I go anywhere else and very few people wear a face covering.