One of the most underrated aspects of Midoriya and Uraraka’s relationship is the fact that Midoriya thinks so highly of Uraraka!
When he saw the fake Uraraka jump into danger without a plan and without making herself float, he knew that couldn’t be Uraraka because Midoriya believes that Uraraka is too smart and skilled to fall into danger like that. Uraraka can make herself float, and Uraraka would come up with a plan. She’s someone to Midoriya who doesn’t need saving. He views her as such a capable and strong companion, and he’s right to do so.
It’s a shame so many people ignore this aspect of their relationship and act like Bakugou at the Sports Festival is the only person who understands and respects her.