[Tactics]

Chapter 257:

Spoiler for :

So Yuji is indeed Sukuna 'replica' made by Kenjaku thus their similar looks.

Yuji can use Shrine but no DE yet, and his version is weaker due to Yuji lack of understanding.

Yuji version of Shrine seems hinting that Sukuna CT is "Cut" while "Release" is RCT to "Copy" thus Cursed Spirit won't be able to understand it.
Pretty much like computer ones, following explanation that CT manifestation will look different for each era for passed techniques due to difference of knowledge.