I just recently finished watching Gundam 0079 and I've been having the same thoughts for a while too. Even if the animation itself is antiquated there are still a lot of really good looking hand drawn keyframes that look really nice. That's the difference between the two.
Not to turn this into an East vs West debate but I think that American animators don't animate anymore because US studios are still forced to pay workers a living wage and maybe benefits, or they try to get away with not pay them at all. Everything gets outsourced overseas because it's a whole lot cheaper than doing it all in house in the US. Television animation was kind of a mistake in that regard. There's also a lack of true innovation or creativity. Just look at what's being animated. Like art styles, and the levels of animation quality. It's the same shit being done the exact same way. It's boring. Some shows still manage to be really well done animation wise but it's not that common. Anime is guilty of doing the same shit too with a few exceptions because they're allowed to actually have moments of genuine quality cuts of animation . Older animators with high levels of skill in 2D animation are retiring or literally dying off unfortunately.
American animated films are bland kiddie trash (with a few exceptions) made to appeal to the lowest common denominator because they cost so much to make. There's a lack of risk taking, which is a problem with Hollywood in general because movies and TV shows are so expensive. We have the ability to animate things with computers that were almost impossible to before the invention of computers, yet most cartoons haven't looked that much better in a technical sense than 10 or 15 years ago (most cartoons get BTFO by animated movies from the 20th century). Even if you had a unique vision and wanted to do interesting things with animation in the US animation industry, you're surrounded by self obsessed ideology driven manchild hacks like: