Board Thread:Versus Debates/@comment-31338621-20200309130706/@comment-26636534-20200401195112

Jason of the Mangekyou wrote: NoThInG HiNts tHaT wAs tHe MaiN dEtErMiNaNt Of hIs AcTiOn. That's just how YOU ARE INTERPRETING THE PANEL which is HEADCANON. Headcanon is assuming something that's not outright stated. I'm not assuming Obito can see the insects, he himself comments on seeing them in ch475, what don't you understand about that?

His actions (making contact with Fuu) indicate he accepted the risk while being aware of the insects, lol arguing for no reason.

Only headcanon here is whatever assumption you are making of Obito's determination.