>>5427468That's just over exposure talking.
The more time spent, then the more you learn and the more you come around, especially when there aren't any other routes to split your time, however the more time you spend with them, before you know it, no other girl really has any chance and any that do come along are DoA because at that point it feels abrupt or bad narratively to hop onto another girl's route. Anons will inevitably lock themselves into the first girl's route even before it's officially set in stone simply because she was there first which meant they had more interaction and exposure to the character.
This is why the curse of the first girl is so prevalent and dangerous if you aren't vigilant.