User blog comment:Fintin/Poneglyph of Dressrosa/@comment-1595565-20140508155648/@comment-2109035-20140508171835

I considered the same thing, but something else I thought about was the possible inability to remove the poneglyphs from their location in addition to their indestructibility. I'm sure that even if the Nefertari family refused to remove the poneglyph, the World Government would have moved it regardless if they had the capability to do so.