I would not let them hang in 22% humidity.
I live in N AZ so I keep the guitars in one room, in their cases, that I humidify. I crank up/make sure the humidity is at least 35-36 before I take them out of the case to play them.
When I’m gone they’ve been fine in the case even without the humidifier going, but I’ll put them, cased, in a small room/closet and set out some water in containers etc.
They are all electrics and have acclimated well, but I’ve had to file down fret sprout on a few over the years.