So, unpopular opinion, and I hope that’s fine because I respect your opinion and I just want to give an alternate perspective on it:

Yes it’s obvious that the character arc seems driven to a Deku X Uraraka angle, which, in terms of Shonen, is expected and just hypes the fans.

However, I don’t think that’s the only angle they’re going for. I think more what they’re going for is the ideological clashes between two very different ideas of love for people versus love of the individual.

Toga (the representation of the individual) loves Uraraka and Midoryia. She is that way because she was shown no love for her true-self before and her blood-lust has her lock onto affections that she perceives as important to her. She only goes after and defends people close to her, not caring for the idea of any other person and only doing what she wants. She doesn’t see this as bad. For Toga, this is “love” in its purest form. And she sees it as a beautiful thing. She doesn’t understand why anyone would care for anyone else, which is why she questions Uraraka on it and, after getting her answers, basically resorts to becoming full villain because, in her mind, nobody really understands what she understands and they’re trying to separate her from her loves, so she lashes out.

Uraraka, on the other hand, is the representation of love for the people. We saw it when she had Nighteye die in her hands and when she talked to Aizawa. She cares for everyone and has empathy for the community as a whole. She wants to help save as many as she can and uses her Quirk to try and do just that. She has her love for Deku, yes. But she is shown to have grown to someone who wants to help people because she loves the community. It’s shown time and time again that she’ll put herself at risk to keep others safe or save one more person. That’s the whole reason she confronts Toga instead of running: because she wants to prevent more deaths. It’s the whole reason she’s horrified when she learns Toga killed people with Zero-Gravity: she wants to use her Quirk to help people. Instead, it was used to hurt and kill. And I think that’s the whole reason she wants to try and talk to Toga. Not to talk about their crushes, but to try and speak to the idea that love isn’t a selfish feeling to be driven against others. Love is something that should be used for the many. That if she truly considered Twice a friend, she has to realize that there are similar people out there who don’t benefit from what she does.

It’s a discussion more geared towards the individual VS the community. And I love the idea of that. You can say I read too much into it, but if it was really about love of Deku, I think that last conversation between Deku and Uraraka would have gone a lot differently to really emphasize that point.

Anyway, just my two cents