An Airbus driver of my acquaintance said if it was up to him he would ban any passenger in shorts, thongs, bare midrifts etc.
He is a killjoy.
Would only do it for Muffin tops as you need some distractions.
Have seen a CC asked someone with a child to restrain them properly, Mum wasn't really interested until CC got on speaker and indicated that regretably we would be returning to the terminal as a passenger was not restrained properly. Pilot then came on and apologised. Mum after a few comments complied as some passengers vented their views.