Ooops I forgot that clowns are actually in style right now and unfortunately they are the creepy ones. So rewind and let’s pretend that I never said that.
Starting new:
“Would people still wear regular shoes? “
If they lived on an island, they didn’t wear regular shoes to begin with.
If they lived on the mainland, then yes they would wear regular shoes, but only at simchas. Unless you are what’s her name in The Wizard of Oz, because then you would only wear red shoes so long as they sparkled.