Careful! Some of the scenes you would think as CGI are actually using practical effects. Even a couple of scenes with liquid metal on screen were using models.
T2 and Abyss were trailblazers. I remember on the T2 director’s commentary how they were so amazed when they got the effects back months later because they’d never seen anything so good.
There was a lot of cartoon animation done by hand in the 1930. Frame by frame drawn, far superior to modern animation. However the styles are different, and some prefer one style of animation over another.
I've just noticed in the 'full version' linked to in the reddit comments, it's a poorly done 480i -> 480p, and the interlace fields are reversed.
If you watch the panning in the original star-scape at the start of the video, you'll see it jittering back and forth as it pans. Sad. If properly converted to 480p, that scene would be super-smooth too.
(It's less apparent elsewhere, unless there is side-scrolling)