People are tired because it's taking too long, and getting repetive, all this could've gotten done just as well and even more in lesser chapters, but we barely get any new info or progression in each chapter be it romance or family plot. Also the premise did include him having a bad family back story but it was never implied that it was a major focus for the plot or that it's something dangerous, so this is all pretty sudden and unexpected for most readers, that first season had a complelty different tone.
I get it, I think the main issue is that the author has included too many details and is now stuck trying to tie all the knots together, so yeah i do agree that the progress is slow, but the people asking have to kiss and fuck are starting to sound repetitive as well, like if yall want smut there are many manhwas that cater to that, just read full volume or something.

People getting tired of the story when there's plot instead of romance is crazy, did yall want them to kiss and make up when juheon still has a shit ton of things on the side? That's recipe for disaster, I'd rather get the happy ending after everything is solved