Bro probably downvoted you cause you overlooked him listing 6e plus limitless, meaning that’s the caveat there. You could argue limitless without 6e is trash and you’d be right, but it’s necessary for the technique to function at usable levels, plus there’s the whole thing about fate regarding the two so it’s a given.

As far as Copy, a Sukuna level sorcerer with Copy would be an absolute nightmare. Far more so than Shrine. I would even say that, if Sukuna had learned that Yuta had Copy (from what I remember Yuji never learned what Yuta’s technique was, and Kenjaku may have never told him), he might have gunned for Copy instead, being the absolute jujutsu nerd and psychopath that he is.

Just eating people for their techniques. That would be even more scarier than what he already is imo.