I'm surprised people here are saying "wow who cares if everyone finds out about the curse!"
For me, it's not really about that. Obviously it'd be a big deal (enjoy becoming some sort of science experiment ^^), but I'm willing to bet that wider social/political/... implications will just be ignored anyway. The motivation, means, and goal are just "manga edgyness". It's manufactured character drama, not actually about anything of substance.
And even if it's not, when reading such a quirky romance manga I want to explore those quirky themes through the main characters and their issues. We are just a few chapters in; we barely even know the main couple yet. If the mangaka feels they already got so little to offer that it needs that sort of tone shift, well, that doesn't bode well, does it?
Obviously in the end anything's possible and maybe the first few chapters were a bit misleading and this all turns into a wide-ranging socio-political works or, I don't know, aliens invade or whatever.
But more likely it'll just be MC's calm understanding will sooner or later convince antagonist-girl how wrong she is, and for no reason she'll end up with bully-dude, because that's how these plots go, and it's all sorta meh ^^