My 7th baby had dystocia and she was only 8pounds 14 ounces.
My ob said that would have no bearing on my next delivery even if baby is large again. But my ob is super laid back.
I would not consent to a section because of previous dystocia or large baby. All my babies have been average weight. No clue why my last was a pound larger than my biggest. I dont think my next will be as big. (Not that i think 8,14 is all that large. Lol)