nostr:npub1lm7pvqk7s2yqhkfgy72cuh50ltfkdfk8zsg07ncfskjmrck4rf6qdanmp3
"past few years"?
It's more like a quarter century.
I'd say it started with 'The New Batman Adventures' and 'Batman Beyond'.
https://en.wikipedia.org/wiki/The_New_Batman_Adventures
https://en.wikipedia.org/wiki/Batman_Beyond
As someone who grew up with 'Batman: The Animated Series', which has a far more organic look, I didn't like the new style at all.