How important is sexting and sharing nudes in a relationship?

I m ( we both are 23) in relationship with a guy from past 3months everything is really good and yeah I really trust him. I even share few snaps sometime. But he's like he's not interested in snaps but want a Video call but I never really done something like that through a Video call so I told him I m really not comfortable so nope I can share snaps but he's like no.
We even live in the same city and we meet regularly like at least weekly twice. But he said that he won't do any romantic talks from now till I do him a video call and even when we meet he said that he will be very normal , he's like your not opening up over Video call so I don't like to do anything when we meet and I will be normal with you. But I still love you.
I really don't understand why he's comparing both like is the mistake really mine?
How important is sexting and sharing nudes in a relationship?
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