Board Thread:Versus Debates/@comment-43403813-20191020201539/@comment-43403813-20191022010250

I think Obito and Madara knew that the Gedo Mazo could do this, but they didn't for two reasons:

1. It would take too much chakra from them, at least for Obito. I reckon Madara would have managed. 2. Both of them would rather not sacrifice their mobility. They'd just take the long route to defeating their opponents rather than insta-win with the consequence of being impaled and emaciated.