Spoiler!
I'm not bothered about who was end game on principle, but I do think it trivializes "fated mates" as a concept. Other stories (manga) I've read about rejecting them is really huge and meaningful, even life threatening. I also found Jeongwu really unlikable. He instantly jumped to calling MC a wh*** omega when things weren't going his way and that wasn't justified at all.
Characters all felt really weak overall and the corporate side of the plot felt really tacked on.