Review Detail of Im_Him in The supporting character's harem is very normal

I reached chapter 262. I've never felt like this while reading a novel before. The entire thing is simply frustrating. Before he thinks about buying slaves, Akna, the servant/assassin, wants to do sexual things with him, and he's like, "Oh no, I don't want to force you to do that." 2 seconds later, he's going on and on about how excited he was to start a harem by buying slaves. That's such a drastic character change from everything that happened before it. He assumes basically every girl he runs into is a heroine without any evidence other than conjecture that he doesn't even apply equally to every woman. Like Rolen, he had never considered her to be a heroine for over 100+ chapters since he met her. But when she gets put up for the slave auction by Alec, he suddenly starts to say she's definitely a heroine/female lead while knowing Alec sold her. Like what?! What makes someone a female lead to Lathel is wholly made up and makes no sense. Another thing I didn't like is that from what I've read, there are no female MCs (Like Alec, who has "mc aura" BS), and Lathel wanted to help Alec get stronger when he already knows Alec wants to kill him. Then he assumes Laura is a heroine simply because she is beautiful and she is a captain of a security team. In the next chapter, he instantly says she must be a female villain because she didn't treat Alec well. His thinking makes no sense because every single person who he thinks is a heroine treats Alec like shit, beats him up, or even legit has tortured Alec, and he doesn't assume any of the other ones are female villains. Then there's the dark elf lady who is being sold at the auction and is supposedly super beautiful and strong, and Lathel instantly assumes she isn't a heroine because Alec doesn't have 100 million gold to buy her. It's like, how can you just assume that because isn't it a trope that the protagonist saves the woman after she's sold, and they fall in love? He uses cliches to say who a heroine is, but it is never consistent. As of chapter 262, the only person he has confirmed as a heroine is Lilith because he got a message from the system. Then there are 6 other women who he says are female lead/heroine without actually having any evidence other than his imagination.