Idk it's debatable to me. Because on one hand, yeah it explains why spirit tuning is so important, and we do use our own power to summon these things, and a lot of ashes when upgraded can fight even late game stuff.
But on the other hand, if they were all equal, it is a bit odd that renown ashes are treated as better, to the point they can't even be reinforced by normal means, and it's a bit odd to imagine someone like Black Knife Tiche or the Mimic Tear is equal to a random banished knight, or perfumer, or land squirts