So I think I know why Gojo Has a blind fold, and I think after seeing ep 7 it was right in front of our faces. We know in order to properly utilize infinity one must have the six eyes, well the only time we’ve seen without any thing obscuring his vision is when he used positive cursed energy and pulled a Jesus and when he used his infinite domain. 

I believe his six eyes allowed him to perceive the infinity which is why he was able to use positive cursed energy despite failing numerous attempts before and why he took off his blind fold after using his domain. He needed to perceive infinity and he simply just doesn’t need to process that much info all the time so he handicaps himself