I get what you're saying, but only two people made a comment about the hair. Enjoying art is also part of enjoying the story with this kind of media. It may not be the sole reason people like a series, but it's a huge factor.
Though the art is beautiful, the hair distracts me a little, and the way the hair interacts with the setting and fashion/clothes is also kinda distracting. But I like the story, and the art style itself. And the hair might've been fine if it were executed slightly differently to suit the setting/art style/clothes more, especially because the colors of the hair, eyes, and skin are hard to combine with clothing. If I could talk to the creator of this series, this would be one of the first things I would talk about. Especially because this has so much potential, plus it's an easy fix.
Opinions are opinions. That's the reason for the comment section. Because people want to share an opinion, critique the manga, enjoy the story with others, etc. They also help the creator to improve.
Besides, people aren't going to ditch a good webtoon just because they don't like the hair.
People please stop whining about the hair! We get it you don't like the hair. So why are you still reading this if you are so bothered about the hair?! If you find the story good, then you won't even notice the hair! So please leave!