>so everybody can get undressed
Wait what? What are you removing?
Flying in the US this week I removed nothing but a winter coat. Everything went on as normal, nothing out of bags, jut coat off.
I usually have to remove my jacket, and always the belt
Probably the same thing as you, but lost in translation. Removing jackets, maybe shoes, winter coats, hoodies etc.
Not undressed in the "everything but your underwear" sense.