It's an effort fueled by corporations to streamline and speedup production, these types of samey ''moba'' visuals
are designed to be easily mass produced and now are being inserted into every slightly cartoony game on the market.
People who work on this stuff are your hundreds and hundreds of amateur attendees at ''game art schools'' and similar places where they teach them a recipe or two that they can proceed to repeat ad nauseam.
They also get direct ties to large companies and that's why that is the general default you'll get. Same thing goes for typical AAA-type games and the movie industry and it's only gotten worse.
In these circumstances you simply cannot expect your typical randomly assigned art director and his team working on this remake to even consider
properly translating designs and art because they simply aren't capable of comprehending a certain style philosophy that they weren't force-fed to make.
They look at these old games and say ''yep, we can now make it look like other cartoony games on the market''. and then proceed to randomly redesign things just for the sake of it. That is all.
And there will be no consideration given to what the old art was trying to communicate or convey, which can be honestly easily read even from ps1 restrictions. Shapes, colours and textures are all there to imply things.
A strong art vision is exactly that, and it will permeate through technical limitations.
Which is why remakes of specific games like Spyro need to be handled very carefully, and that is something that this team is simply not capable of.