I'm not mad per say but I hate how she was easily manipulated. Because even though she is the princess, she is a little girl and people let her make major discussions. No one around her, helping her make discussions and what them mean when they go into affect. So, yes I'm mad at her discussion but not at her.
yes, there is much more worse characters and i hate them too actually, but for me, i feel like the comments hate is justified in a way and not just misogyny, because for me, i feel a lot of hate for her and the other fucker right now, because of THIS arc and the cliff hanger and i also agree with what the other reply said :)
more specifically—
i just think we are more likely to see more hate towards her right now rather than other characters who have done worse because of the recent chapters. though it is weird, some others are not mentioning the other fucker of whatever his name is when it's clearly all his plan
right? like yes it's an unsatisfying and lazy characterization of someone who should be a more important character since she's a princess and ranks higher than the three greats that feels disconnected to the manga's established world building, but we should not be wanting a sheltered character who is depicted multiple times to act like—I wouldn't say child or teenager but maybe someone who freshly turned eighteen and it being groomed.
"You can't groom a thousand-year old" no hate but I have a couple points
1. The author is depicting her as someone young and childish despite her age. a thousand-year old loli shouldn't be treated as an adult if they act like a child. not like the "eternally young" trope (elaine from seven deadly sins vs babydoll from batman). i coincidentally watched a video essay on this topic by aishyo on yt
2. old people can be groomed and prayed upon, which is happening to her. anyone can be groomed regardless of age.

The princess is annoying for two chapters and she becomes the most hated character in this entire manga, but the many male characters who are SIGNIFICANTLY worse than her and have been causing problems for MUCH longer don't get half that amount of hate & some are even fan favourites. Misogyny strikes again!!
Disclaimer & further explanation: I'm not saying u have to like the princess, I just think ur all being too harsh on her and not harsh enough on the men who are equally, if not more, responsible for the current situation