I'll bet that means no "usual" SMS like Facebook or Instagram, but he probably had a Discord group, maybe used Snapchat, or on the dark web. Gen Z always has a presence, even the Amish figure out how to get around their prohibitions, that's what teens do.
He was in Discord. They deleted his account from what I heard.
I read something a few days ago he had a Discord account but was deleted. Rumor mill. Just something i read on X.