I'm mostly in a state of bemusement about people's reactions to this manga, again, because people appear to think a happy straight marriage is, like, a possibility of what the author is aiming at, and that's so blatantly not the case, I am lost about where anyone's getting it from.
I think the two biggest actual problems with the plot are:
Although I love Uta's weird pigtail friend, her whole thing is baffling and has no clear thematic relationship with anything else. Is she ace? Is she just emotionally closed off? Like... legit a sociopath? I thought maybe the idea was that nontraditional, weird, idiosyncratic relationships are okay, so she and whatshername can make it work despite her inability to be in romantic love, but now I'm not sure.
And the whole thing with Uta's parents is just one thing too many. I don't really care about her deal there.