So, in an attempt to get this thread back on topic...
Do you prefer stylized art in D&D, or generalist art?
Would you prefer less realistic art that is more stylized, or more realistic art that is less stylized? Maybe both?
First, let me say that I know very little about art and may not be able to accurately convey my thoughts on the subject. That said, I generally prefer more realistic and less "cartoony" proportions, stances, facial expressions, etc. in fantasy art. That's why I wasn't a fan of much of 4E exaggerated "action art" and I also couldn't get into some of the overly scripted and stilted poses that characterized certain elements of 3E-era art.
But, just because I like more realistic art techniques, doesn't mean I don't like fantasy in my art! On the contrary... something in the way realism and fantasy interact, especially when they boldly clash, really appeals to me. I suppose that's why I have a soft spot for D&D art of the late 80/early 90s -- which was before I was introduced to the hobby, so no nostalgia there for me; I discovered art of that era much later -- art that was rich in mood, detail, and hidden narrative. When I look at an image, I don't want it to tell me all its secrets at first glance. I want to stop and think and wonder about what is being conveyed and what lurks just beyond the frame. And not just combat and action, but slices of adventuring life wherever one may find it: around a campfire, sharing a good meal and a tall tale in a cozy tavern, descending down a shadowed stairwell and into a deeper darkness (or running up those stairs, fleeing from gods know what).
One thing I do miss in recent D&D art is depictions of fantasy environments. Art direction is sometimes too focused on characters and not enough on their surroundings. For example, I really love the atmospheric image of what looks like a frontier village on page 16 of 5E DMG. Simple yet evocative. No fantasy elements there, obviously, but general principle stands.
More stylized art... well, that depends on the style in question, as I imagine is the case with most of us here. People like different things and it's impossible to appeal to all tastes. Personally, I appreciate consistent artistic vision, when a product (book, supplement, boxed set... or a movie, a TV show) gives the impression of a singular driving force behind it, and not that it was produced by committee. In that sense, Brom's art for Dark Sun was just sublime. Not my usual cup of tea, and not something I knew I wanted until I saw it and then knew I wanted it!

(I didn't know I wanted Mad Max: Fury Road either, but that was also a fine slice of post-apocalyptic esoterica, if I may say so myself.)