I'm gonna be honest, I think the whole 'Dabi is Toya Todoroki' theory got so much traction mostly because people really, really want a dramatic family reunion for Shoto. It fits the narrative beats Horikoshi loves, sure, but the evidence always felt circumstantial to me. The scar stitching matching his mother's quirk? Could be a red herring. The blue flames? The Todoroki family fire is consistently depicted as orange-red, even in flashbacks of Endeavor's youth. What if Dabi's just some failed experiment from a different branch of quirk research, and his vendetta is about the system, not just one family? That'd be a darker, more interesting angle, honestly. The fandom latched onto the Toya idea so hard it became almost fact, and now any reveal that deviates from it would probably cause riots in the forums.
I will admit, the 'Toya Todoroki' theory is airtight from a character symmetry standpoint. It makes Endeavor's arc a perfect, painful闭环. But sometimes a story can be too neat, you know? I keep thinking about how 'Dabi' is written with the kanji for 'cremation' – that feels intensely personal, not just a random villain name. If he's not Toya, then who is he to carry that specific burden? The theory's biggest weakness might be its overwhelming popularity; we've all talked ourselves into believing it's the only possible answer, which makes me suspicious.