He defenitely did it on purpose. And Inter next or not, players should face consequences for shameful actions like that. The problem isnt them penalising actions like this (its warranted), but FIGC are winging it so to speak, no real consistency but go case by case for the heck of it.
Remember few years ago when Adriano was banned for diving? Well he was the only one, no one else was banned for it since. Thats the problem, their policies are bit random even if valid for that case alone, no clear guidelines to enforce with, thats why even if Gila deserves it, its weird to do it because I doubt they will penalise everyone who scores with their hand on purpose. If they are to this time, they might aswell do it every time, or just let it be in general.