well, what do you mean by complain? I sometimes like putting and commenting my thoughts about a series and yea sometimes it's not the most positive. But I'm never disrespectful to anyone abt it, and many comments I see aren't either. They may not love a manga but they should be able to express their opinions. It's just an illegal site after all. People shouldn't be taking other ppl's opinions srsly anyways.
It's different if you're talking about someone complaining abt the translators or the authors or "if you enjoy this u need help" type of comments or if they're being incredibly rude about it. I do see ppl like that and yea they need to chill.
Comment sections are also used for discussions and exchange of opinions. if everyone agreed what's the point? Just my perspective on things.
People complaining in comments on an unofficial website it's really stupid . I mean if you don't like something drop it why do you act like you are paying for it . Your rant is just gonna spoil the mood of people who like the manga .