Because Ashley in OG 4 looks like a child, especially weird since she's supposed to be 20 in the game but her face looks like she's only 14 (typical Japanese lolitacon fetish for the time).
Remake is a total upgrade and Ashley now looks like a model and a WOMAN, not a cherub faced girl.
G*mers just to want to be unabashed pedos.
More proof RE4 was the worst one
It is the best written of the old games since it fully commits to being self-aware action schlock. From what I understand Shinji Mikami ended up just writing the plot himself in like two weeks after the staff couldn't decide on a scenario and just sort of half-assed it so they could get the game back on track