I didn't forget about Enma. And Enma is not a Nerf its a double edged Sword that can output so much power by draining Zoro's Haki. But once Zoro gets used to it is no longer a "Dangerous Sword". And Zoro wasn't always holding back at least not against Kaido with the attacks that did hurt or missed.
As for the Ryou from Alabasta yes but he wasn't able to fully control at that time. Since he himself was saying he needed to be able to draw that power at will twice after Alabasta. But coming from the time skip he was easily cutting steel likes its nothing. I don't know about the internal destruction part yet. But from chapter 1001 he was the only one that wasn't surprised by that Haki. "So that was the Haki luffy was talking about, Official translation = Was that the Haki Luffy talked about?"
There are so many things and details we all could keep going forever.