This year was not indicative because of soccer corruption. The Qatar world Cup didn't happen in June as it normally would, clashing with provincial finals, competing for sports eyes.
We won't know until the next Euros.
The GAA already has 2 non competitive provincial championships in the football. One of these situations was created by the GAA itself.
Time will tell whether the experiment works or not. If we do get a reinstatement of September finals, the championships won't start in May as before. Short championships are probably here to stay.