>>39949215t. doesn't understand how the gen 1 artstyle works so they default to "lol xD pokemon gen 1 sprites = SO BAD!!! THEY ARE WRONG!!!!!!!!"
The linework and proportions on most of them are atrocious for no reason other than for the sake of being ugly and GENWAN IS WACKY meme.
Gonna assume this is a community effort because some were done more tastefully than others, most of them are just shit (basically all of Gen 5 is a trainwreck), you've got some that, while not too in line with the style, at least make an effort to fit in and be presentable (Heracross, Piloswine, Houndoom to name a few). Only a handful like Donphan, Trapinch and Salamence get pretty close.