Man, that group of characters left a bad taste in my heart and mind. And that character denying the feeling of love as 'something you do at an all-girl school', that just doesn't sit right.
I've seen many of this cliché in the yuri plot. I know there's must be something like kind of love in all-girl schools and when they are graduating, they are realized that kind of love is wrong. But i agree with you because they think yuri is part of puberty in high school.