I actually didn’t have a problem at the beginning with Sakura having a crush on Sasuke instead of Naruto. Naruto stans are so entitled thinking someone has to have feelings for someone they happen to stan for. Crushes are not even a big deal, nothing wrong with having a crush on the popular talented guy instead of the trouble maker.
The problem is when Sakura can’t understand when Sasuke rejects her. Or when she is manipulative. Or when she acts her feelings are the biggest most relevant thing when they are in the middle of a war. Or when she is still being a dumb about them when she is a woman in her what, 30s?
When I see these posts like “you had a perfectly nice guy liking you and you still went for the jerk etc you deserve it” it’s pretty sexist. Sakura doesn’t have to start liking Naruto just because Sasuke doesn’t want her. Not to mention both Sakura and Naruto have moments where they dismiss the others feelings, not just Sakura.