Could you speak more about how you think midoriya hasn’t internalized what he said to todoroki?
Yes, it’s one of my favorite aspects of their relationship. I think a lot of people don’t talk about the reciprocity of the Sports Festival fight, and think about it in terms of just Midoriya extending a hand to Todoroki. The roots are deeper though.
So Midoriya explicitly says to Todoroki during the Sports Festival that “It’s your power, isn’t it?”, specifically referring to Todoroki’s fire side. The Sports Festival is a bit of a revelation for both of their characters. For obvious reason, Todoroki goes through a transformation of mind and heart, melting in the face of Midoriya’s desire to set him free and challenge him, Todoroki, and not a creation of Endeavor. This is reciprocated back to Midoriya too, however! Midoriya purposefully decides to, instead of ‘rising to the top’ by exploiting Todoroki’s reluctance to use his fire side, and declare to the world that “I’m here” a la All Might, to focus on Todoroki as an individual and draw out Todoroki’s problems during the fight. I think this is extremely significant, that Midoriya essentially ‘throws’ the expected path for him, the career building/All Might mimicry, and yet in some way, also truly becomes 'a hero’ recognized by Todoroki here.
So is the path that All Might had been setting for him not the best path to become a real hero? I think so! All Might’s teaching experience is shaky on a lot of components and combined with Midoriya’s unquestioned idol worship of All Might, it results in things like… Midoriya not understanding Full Cowl until he goes to Gran Torino.
One for All rests uneasily on Midoriya’s shoulders. There’s multiple components to it- it still physically damages Midoriya when he wants to use it at full power. Midoriya has to keep this secret of his legacy as well, but he’s always internally comparing himself to All Might and carrying that burden of succession. Everyone around him is still obsessed with All Might and the flawed idea of the single 'idol’ - Stain, Shiragaki, heck, even the general populace is really into this.
All Might is also his idol, and because of his worship, it’s been canonically stated several times that Midoriya often fails to critically examine how All Might does things/tries to mimic All Might to the detriment of his own development. His entire journey, from starting off breaking his arms, to learning Full Cowl, to developing Shoot Style, has been an ongoing journey to move OUT of All Might’s shadow and come to some conception of his own definition of hero. Yet at the same time, because One for All is still ingrained in his mind as 'All Might’s’ quirk and not his, it’s VERY hard for him to properly internalize and 'let go’ of All Might in some ways. His whole declaration towards All Might, where he absolutely will fight to the very end to keep All Might alive, has a component of that. He can’t bear to let All Might go.
So even though Midoriya told Todoroki at the Sports Festival that Todoroki’s quirk was his, does Midoriya truly believe One for All is his own? Spoilers for this last arc, but he hasn’t! He’s constantly comparing himself to previous successor candidate Mirio and even offers to give Mirio his quirk because he 'doesn’t deserve it’. To Midoriya, One for All is still a gift that All Might has bestowed upon him that he is unworthy of, and he’s doing his best to become worthy of it. However, the heavy dose of imposter syndrome continues to hamper him.
Was he a hypocrite for telling Todoroki him, “it’s your power” in the arena? Of course not! It’s more complicated than that. They’re both struggling with the same thing- the legacy of their quirks and how to move forward with such immense power. In some ways, what Midoriya was shouting was something he knows he has to come to terms himself. As he told Endeavor, he’s not All Might. And Todoroki is not Endeavor.
Their journeys are also these continued foils. Todoroki couldn’t use his fire side until he went to see his mother and he’s still struggling with it. While on the other hand, Deku has moments in which he does such amazing things and pushes the boundaries of One for All, but then turns around and says he’s still unworthy.
Am I advocating Deku cast All Might aside? Of course not. We can look at Todoroki as a foil specifically on this point. Todoroki tries to disown himself from his father, Endeavor, only to reap the consequences when he runs into people like Inasa who can’t help be see 'Endeavor’s son’. Furthermore, it’s counterproductive- Todoroki is never going to not be Endeavor’s son, just like Deku is never going to not have a fundamental part of his identity be from All Might. But the key is to not be bounded by pre-existing definitions of identity and expectations- it’s only by surpassing and changing himself without pure imitation, taking in influences but owning them, can Deku grow properly.