This is funny but certainly a valid human factors issue.
That space suit weighs in the neighborhood of 300 lbs. and requires a special rig to put it on let alone several people help to get into it.
I would probably go mildly insane if something itched and I couldn’t scratch it. I think an inner-ear itch would just about do it.
Now I’m curious…gonna see if someone from NASA can answer this on Twitter. ^_^