idk if it's a trend nowadays to hate on main character especially in bl manhua etc.
like ik the blonde didn't really do anything really "bad" except he did lie and it doesn't make him someone good. but yeah its partially the mc's and ml's fault for the lack of communication.
for the personality of mc , I don't really find it as annoying as the ml's personality. like ml decided to trust another person instead of confirming it with the one he loved. similarly mc also decided to just believe anything except for clarifying it with the ml.
I don't usually hate on manhua's main characters but this one somehow .... Idk. I don't like how they characterized the uke as a whiny spoiled btch but also powerful. The seme kinda lack of determination. He blindly believes in everything the uke said but didn't anyone else. At least try to hear their explanation first. Then dig more the truth about it with a strong evidence/witness. I don't like how they villainized the blond hair guy. To be honest if I don't read it wrong, he didn't do anything bad except deceived the seme into marrying him. I don't read the novel so CMIIW. Come at me only if you have something to change my mind.