Flightwatch is not closing.
Flightwatch was and remains always available on ATC FIA frequencies (Just like the Hazard Alert joke...er...."service")
ATC provides an effective and more efficient FIS - AIP SUP H62/07 says so - and they are taking over the primary provision of FIS.
If the unicorn areas are so busy, what makes you think that there will be time to pass weather and NOTAMs to the pilot too lazy to make a phone call?
Sorry, this whole thing is getting waaaaaay too silly for words - all so some AA manager can pull out a plum and say "What a good boy am I".