This is exactly why I've always had my hot take of thinking the SM-era full arts were better. There was a least a consistency and theme to them, while the SWSH ones mostly have splashes of color that don't fit or main backgrounds that don't look right with the Pokemon.
Honestly I'm in that camp now too, as crazy as that sounds from me. Started around the time Rebel Clash came out. Sun and Moon has that consistency, like you said, whereas SwSh's are a huge mixed bag. I like
some of them, SwSh base in general was okay, especially the legendaries. As it went on though, it's starting to just get...Weird? Like, pink backgrounds for Inteleon, Rhyperior is in the Rainbow Dimension, and Centiskorch is behind a blue and green background that looks like a wave of water. It bothers me especially since they're
capable of having fitting backgrounds. Just look at, I dunno, every single Full Art from BW and XY?? It's so disappointing since I think overall most of the V full arts have better
renders than a lot of GX's, but they're not being done any justice.
The basic full arts from Gen 7 have definitely grown on me over the years as I gain more of them and see them all together, it's a cool consistent little part of a binder. (At least if you organize by type. By set? Not so much). Not the best thing out there but definitely not the worst. I don't and never will like them as much as EX's, but I can appreciate what they are. Same with Hidden Fates shinies which despite how hard they are to collect I really do like seeing them all together.