And then you report "information delta received" but it's become "echo" and ATC can't tell you what's changed so what's the point of reporting ATIS letter on first contact?
Why is it incumbent on ATC to listen and check what ATIS pilots have when it would be easier for ATC to tell pilots what the latest letter is?
Also, why tell an approach unit, physically situated in the same room as your previous sector, what the QNH is when ATC have to give pilot QNH on first descent to an altitude?
Surely that's too any QNHs? There's already too much to remember on first contact, it's a waste of RT time.
/rant over/