Context.

It is normal to post an anecdote related to the link.

It is weird to post a message like this to a public mailing list out of nowhere, i.e. without related context.

(I have not actually checked if the message was out of the blue.)

Identity of the participants is not made. That listing was content more suited to a personal mail misdirected to a broadcast medium. You'd have to be a creep to go looking for the third party and it wasn't sent to the third parties wider circle.

Any story which is about "I once did a with b" invites the "why are you telling us" response but I think specifically in this context, you're shitposting.