Jeroen Ubbink on Nostr: I would look at it the same way like a browser, an email application or ssh are also ...

I would look at it the same way like a browser, an email application or ssh are also not "TCP clients", while strictly speaking they do use that protocol under the hood.

Or a real-world analogy: we do not define cars, bikes or motors like "road vehicles" even though they mostly use a road.