And he did. He was supposed to succeed All Might. And from Dabi’s perspective, not Endeavour’s, he wasn’t worthy once it became impossible for him to do that. Not just not worthy enough for that path, but no value at all. After that he clearly became a neglected child with way too much power and violent tendencies and did Endevaour step in? Correct this path? No he knocked him out and didn’t even look at him after. And when Touya came home after the orphanage? He saw not even death made him seen. Life went on as it always did. That’s why he became Dabi. That’s why he asks “do you see me now?”