There are many different kinds of drunk; happy, sad, quiet, exuberant, aggressive etc. I’m primarily concerned about them impeding an emergency or bothering other passengers.
If someone can’t put a mask on during an emergency descent or open their own seat belt during an evacuation they need an attendant or shouldn’t be onboard. The cabin crew have other important duties such as manning the doors.
A drunk on television is funny, one in the same room as you isn’t.
Anyone beyond slightly merry and compliant can stay behind and sober up as far as I’m concerned.