Personally I like the @ way more. You even read it as “at”, which makes sense in this context. “Gerryflap at feddit.nl” instantly makes sense. It aligns with email, so it also makes it easier for newcomers.

I am no dev of lemmy, but traditionally, to connect remotely to a computer it was [email protected]. The mail addresses simply use this pattern. It’s nice for Lemmy to use it, and I’d say ot would have been nicer for matrix to use it (not that I really care)

The bigger question is why Matrix didn’t follow the long established standard for this, which is using @.

But I guess it fits into the general pattern of: Monolithic, Awefully Trendy ReImplementation of XMPP (MATRIX).

P.S.: it’s nice to be able to have your ActivityPub, XMPP and Email all on the same address 👍