Wizards/Hasbro hires contractors to produce art for their game. They make virtually none of it in house. It's most likely they neither know nor care who or what produces art for MTG. Besides, they produce so much content in a year, some of it has to be AI/ML generated, so this is incredibly unsurprising. At this point, MTG is starting to enshittify by dumping out product as quickly as possible. Their quality control and playtesting has gone out the window. Most of their recent sets are pretty poorly received in the limited magic space. I don't personally care about the use of AI art, but I can say that for money making enterprises, they'll eventually have more and more art produced via ML over time, and eventually they'll use ML to design sets in some capacity, as well. Right now, people are upset over it or annoyed by it on some quasi-ethical grounds of "stealing from artists by not compensating them for the work they produced being used to train the models." But it's going to eventually become the norm, purely on the basis that they aren't going to lose any money from using ML to produce art and they're going to save money by doing it.