I noticed so. Since begining, that is what Watanabe fundamentally acknowledge of what yuri meant for her. And that's what make her turn into Radical Classist Yuri-danshi. LOL.
She should learn more contemporary yuri literatures aka doujins.
Right! And it's totally fine that she likes a certain specific scenario and tropes and whatnot, but her schoolmates fundamentally are different than shipping fictional characters. Watanabe just needs to learn that 1) she cannot control how other people feel about one another and 2) it's okay for other people to like people who ypu don't think 'suits their image.'
She's (Watanabe) adorable and just wants everyone to be in compatible relationships, but her fatal flaw is wanting to make them happy in a way that makes her happy first rather than accepting that real life doesn't need to reflect her desires.
It also would be nice if she stopped judging Yoshioka's looks and behavior as inherently bad and needing to be reigned in, but hopefully that'll come.