I refer back to
Morrus's thread regarding the D&D changes to highlight how, release after release it is increasingly evident that the aesthetics of D&D illustrations are changing.
What do you think of this trend?
I don't mind the change, if there is one. I don't think there's really been a significant change; it still reads as pretty generic western fantasy to me.
Sure, some of the more recent books have featured a greater number of fey creatures, but I don't think that's a trend. I think it's just a less explored aspect of D&D fantasy that got a couple books in a row on it. Feywild and Shadowfell are interesting because they're poorly explored. FR and the outer planes are pretty well bought and paid for at this point. Taken as a whole, Avernus was pretty far from cartoonish, and the art I recall of the cartoonish aspects really wasn't very cartoonish. I don't think Strixhaven, Saltmarsh, Candlekeep, or Frostmaiden were particularly cartoonish, either. I don't recall any cartoonish standouts from Tasha's or Fizban's.
However, I do think people are increasingly getting sick of grimdark, so they may be more welcoming to more fanciful aesthetics. For a long time now, pop culture has been dominated by postmodernism and deconstructionism, and it keeps resulting in the grimdarkiest grimdark that ever dared to darken a grim. Given the state of the world for the past several years, I think people are getting exhausted by grimdark.
Beyond that, I do think that as fantasy is increasingly taken seriously as a genre and D&D taken seriously as a game, it's increasingly likely for both to stop taking themselves so seriously all the time.