People are really overreacting to that ending thing. Hibiki did what's right (so she wouldn't feel guilty thinking that Minato was losing a big opportunity because of her), she just overstepped the bounds a little bit, which, you know, happens. And Minato is also right in choosing what she actually wants and pushing back, but she didn't need to compare Hibiki to her father (even if the comparison is good, it's too hurtful a thing to say), nor did she need to jump straight from 0 to 100 in her pushback, so she also went a little overboard.
Both are just trying to think about what's best for the other person, which is what you do when you're love, but it's hard to see where the line is. Especially in the case of someone like Minato who wouldn't even have joined the band (that she now loves) in the first place, if Hibiki hadn't insisted at the beginning, so she knows she has to push Minato sometimes.
With that said, considering we only have 3 more chapters (sadly...) that means this little fight should get sorted pretty soon.
Sweet chapter up until the fight though. I love seeing Hibiki support Minato.