I’m not sure yet where I stand on using AI to enhance images you made. I think if it’s for commercial purposes, it shouldn’t be ok since it would essentially be profiting off others work.
But in this case, my big issue is they did this without telling their team or bosses. This is essentially no different from hiring a third party to enhance your work so you don’t have to do as much and pocketing the difference. Sounds like they’re updating their guidelines though and I hope this person is fired or won’t be contracted again. They should probably switch the art to the earlier versions in D&D Beyond and future printings too. Which is another thing, the “enhanced” one doesn’t seem better enough to have warranted this type of risk. I’m not sure what that person was thinking.