Hi Jan,
I understand your point, and indeed most, or all of the info can be found elsewhere on the internet, if you look/search for it.
On the other hand though a lot of, interesting, info is brought under the attention of the Shipspotting community that otherwise would be left unnoticed for them.
So personally I'm not at all annoyed by Johnny posts, he just brings info under the attention without having to search elsewhere on the internet.
Cheers,
Roy