It doesn't seem bizarre to me at all. Giving met PIREPs of severe weather conditions that could affect other aircraft (turbulence, ice, etc.) should not only be considered a professional obligation, but mandatory in some during some ops, including crossings
Absolutely - but I would tell
Air Traffic Control this. Not operations/my company. My company is (i wouldnt say not going to but very improbable) unlikely to ring up British Airways, KLM, Air France United, etc etc etc to advise them individually of turbulence enroute.
As an aside, my post and capt playstations post are referring to the rumour that Air France Ops were ACARS' a report on turbulence - NOT Air Traffic Control. So far nobody appears to have verified where the msg was addressed to. Telling someone at my company is the last thing on my mind whilst flying an aeroplane through presumably moderate to severe turbulence. Trying to type it wouldnt be much fun either.