Why did people ate that plot thread? Remind me again. People keep saying "the Japanese hated the MC because he plagarizes, yet they dont take other stuff seriously" and honestly, I'm failing to understand here.
When MC realized that he plagiarized the manga he felt he did the wrong thing, but then the author introduced an editor telling him some thing along the lines 'he doesn't know what his circumstances are but he should keep going for the sake of hundred of thousands of readers that fell in love with the series' so the MC was plagiarizing for them.
Next chapter he was still beating himself over it, so the we got the female lead aka the original creator telling him that her series belongs to him now. This is probably what pissed people off the most, her unrealistic response to her life work being copied was just to wave it away without any questioning.
Then you had an entire chapter about how he couldn't trace her work and about him doing it with his own style. While also feeling bad about it.
Not to mention he was never using any money earned from plagiarizing the manga so the time machine gave him some lottery numbers to reward him annnd he still feels bad about it.
The MC was getting more and more unlikable with every chapter, while the world itself seemed like it bending itself to point out that his actions are not really that bad, but he keeps whining about what he is doing is wrong and that just piss people off more than anything else. There is nothing else to like about him.
This is not the only issue with the series though, just the plagiarism part.