They do, but as far as the actual movement of funds if both the sender and receiver are both on the same node then the funds don’t actually move through any channels. This would also be true of 2 custodial alby wallet users sending to each other, or 2 custodial BlueWallet users, or 2 users on your own node at home. Does that still count as using lightning? Personally I think so, but I can also see his point on that.