All the talk about Dekusquad and Bakusquad makes me think that Midoriya and Bakugou really have the kind of friends they need in UA that they didn't have in elementary or middle school.
First of all, Midoriya had been quirkless for most of his life and been mocked, even bullied, by his peers because of it. Due to that, he understandably had low self-esteem during elementary and middle school. It continued even after he was given a quirk at the beginning of high school.
That's why it's really important for his growth that his closest friends in UA (Uraraka, Iida, Todoroki) are people who genuinely respect and admire him, not for his quirk but for his hard work, resourcefulness, and heroism. People who keep encouraging him and reminding him of his good qualities when his self-esteem is low.
On the other hand, Bakugou is born with a good quirk for a hero. He has been praised by adults and peers his whole life for it, surrounded by starry-eyed yes-men who kept encouraging his bad behavior and fed his ego.
That's why it's really important for his growth that his closest friends in UA (Kirishima, Kaminari, Sero) are people who can reprimand him and call him out on his bullshit, all while still respecting his strength. People who talk back to him, tease him, sometimes even bully him, and don't feed his ego by overly praising him.
I don't really care about the division of Dekusquad and Bakusquad, but in the end both squads are important for Midoriya and Bakugou's growth as characters.