IMO there are credible arguments for and against AI generated content. But these label backed brands have no real grounds to complain about selling out art. They are big businesses incumbents that have commoditized art and are now worried that they might have some competition.
I’m sympathetic to the hand-crafted buggy-whip manufacturers that really take pride in their work, but we’re talking about buggy whip assembly line #1000 worrying that they might have to retool for steering wheels.