That’s the supporters of certain counties, not the terrace that’s the issue. They shouldn’t be let in the ground if intoxicated, simple solution. The clubs where they get the tickets need to start the ball rolling with a campaign and warnings.
If there was no terrace the same kids would still be drunk and acting the ballix. Also anyone acting intoxicated inside any part of the stadium should not be served. Plenty of bars manage to do it, why not stadiums?
But realistically it’s our culture that would have to change. Meanwhile why should most of us who want to be on a terrace suffer because of the acceptance of drunkenness, especially in the young?