What ban?
well he hasn't referred to a ban he's referred to people seeking a ban on this sort of stuff, he's not that far off the mark, people do seek to censor or ban the use of attractive/skinny women in promotions in some cases
for example the "Beach Body ready" adverts on the tube that caused an SJW **** storm not too long ago - in response to the outcry the advertising standards agency has banned the advert from returning (to be fair to them they cited health claims as the reason and were still investigating the causing offence aspect but it was blatantly in reaction to the outcry)
likewise France banned skinny models but no one would likely dare ban so called "plus size" models, they're currently celebrated even though obesity is a far bigger issue/health risk in the western world than anorexia... the current narrative is body positivity but those skinny bitches need to go for health reasons