>>283091994
>>283092132
Also
>pull out some bullshit move that was never hinted or teased because reasons.
Sukuna being able to copy techniques after seeing them once was established.
Mahoraga bypassing Infinty thanks to its adaptation was established.
Omitting activation chants via Binding vow was established.

You could have come to the same conclusion as Sukuna during pic related, which was 2 chapters before he used it.
Just admit you got outwitted and didn't pay enough attention. I have done that myself 2 weeks after Gojos loss.