Will Dubs actually stop going to watch games is a better question. Attendances in parkhead this year remain high even though basically guaranteed to win every match. When Rangers did 9 leagues in a row in 90s, what were gates like?
Depends who the matches are against, but from my own point of view, the answer is an emphatic "yes".
Outside of Kerry, Mayo, Tyrone, Donegal or at a push, Monaghan (away only), there's little point in attending at the moment as you won't see any competitive action.
The only reason you'd go would be for the beer.
Wexford in Wexford will be the only Leinster match worth attending this year just for the day out factor.