1. Not casually broken, A. Sasuke had to use perfect susano his strongest defensive technique and his best offensive apart from Perfect susano chidori, B. Sasuke himself was calling the meteors “never ending” C. Naruto who was in full blown RSM meaning using chakra of all tail beasts,With TSB, while using 6 giant TBBFRS is not a “much weaker” version of current naruto, whats really the big difference here? Kurama mode still being his ace game.
Momoshiki is not a bigger threat than kaguya at all. Just another example of a villian getting hyped up, just as madara would be “unbeatable” if he obtained both his eyes. You cant be that dumb?
You said it yourself.