Another part of this is the voice acting. If you watch something like Akira or You’re Under Arrest, the acting is so much more restrained and natural. Cowboy bebop is another great example, Steve Blum puts on a masterclass
I was watching a certain *ahem* anime from the 90s/early 2000s and it made me depressed about how sloppy animation has gone. We used to have shadows, colors, physics, wind, strands of hair, tan skin, etc. now we just have slop 😭