Seems to me like he found Gojo to not be that big a deal given the line he gave him. Lets see how it goes.
And guess what? Sukuna reached his limit too. Whatever he said to Gojo applies to him as well, he basically thought he had a "gotcha" moment before being humbled lol.
Difference is he didnt reach his limit by breaking down and healing his brain back 5 times like Gojo, but due to just 10 seconds of staying in Unlimited Void. Meanwhile Gojo survived entire chapters inside Malevolent Shrine

