about the link specifically... I couldn't identify what was wrong with the original version? Because I can think a lot of famously badly animated scenes, and the only problem I could see with the original scene is that they just stand around talking and doing nothing.

The AI version, while I did identify that a small number of shots were objectively better, I also noticed characters being replaced with a completely different art style and other random changes that imply a different authoral intent.

Also, the commenters in the thread did not seem to agree the new one was better. As tech experiment it's not a bad comparison, but in terms of ways to blow $50, OP wasted their money, when literally anyone could tell you 5 anime scenes they wished were drawn better.

I think slop studios will use this for 90% of animations soon, and higher end studios might use future iteration of this to boost to 60fps and/or reduce the number of keyframes drawn by hand, which could in theory lead to a higher quality output at the same-or-reduced cost (with the same amount of labor, or in less time).