Board Thread:Naruto Discussions/@comment-30168130-20170706050832/@comment-734582-20170706170038

Because Susanoo by itself can redraw the maps, and i don't think many people are going to be happy constantly having to update their maps.

Against Shin he fought like fans apparently think he should fight: cocky. Neither him nor Naruto were on their guard with the MS, they weren't looking for special abilities or other signs. In stead they were confident in their abilities alone and so tanked stuff they shouldn't have to, got hit by techniques they should've seen coming. If they'd respected the MS, they wouldn't have been in that mess.

Thirdly, against Momoshiki there wasn't much space to go all-out, since there were villagers nearby. A single PS slash can destroy mountains, one miss or deflection and half Konoha is gone. It's why Naruto let himself be captured: to get the fight away from the village.

So in the end, PS is a superweapon, yet against Kinshiki and Momoshiki he needed precision weapons. Amenotejikara allows him to get close when he needs to, while his sword works on anyone, Sage, Jinchuriki or god-like being. It's not like a jutsu that can be absorbed. It's the safest most reliable weapon he has, and Ameno works very well with that.