Truth. I've seen some convincing arguments that the thing that really broke the power scale of early Naruto and led to the endless power creep we see later was the introduction of Mangekyo Sharingan, and it granting ultra-broken, one-shot powers to its users. Thoughts on that? Even with the tailed beasts and doujutsus existing, the early Naruto was still a pretty balanced universe where basically any slightly competent character could conceivably be a threat or rise high with training alone, with the juubi being mostly power batteries and not too above giant summons or top-tier ninjas when unsealed, and doujutsus buffed their users, but weren't some be-all, end-all abilities. Then the MS got introduced and with it the idea of super-powerful lineage-linked abilities which were just unbeatable for the average ninja, the important characters without them had to be buffed to counter that, and quickly, if you weren't a jinchuuriki or weren't from a super-strong clan with an overpowered kekkei genkai which you of course mastered, you basically just didn't exist in the story,