I agree with that.
Limiting the discussion to “competitions” (might also be true for paintings on commission), it also might be easier to master the use of AI than master the painting technique. Unfair advantage.
Exactly! Not only for competitions though, but also for digital artists who spent thousands of hours just to get a corporate job. And I fear that there will come a time where companies would rather pay an artist who can create a piece that's close to being a "masterwork" within minutes than commissioning an artist who will create a piece of artwork in a month.