It's all a rather sad tale of goalposts moving - but nothing new in real terms. The unfortunate fact is that when one is sitting around with no a/c to fly, or secondary duties to chase, it's probably worth browsing through SROs, then AP3392 (Blunt Bible, but full of all sorts of relevant stuff), JPA (good luck), and finally get onto HR Flt and ask them if there's anything about to change. This all seems like the sort of stuff that aircrew are far too lofty/lazy to worry their incredibly skilled minds about (ha ha), but good ammo if one ends up having to build a case. It all sounds a bit muppety but just remember that when you are on leave, or looking the other way, someone, somewhere, is probably doing you up like a kipper!!
P.S in days of yore (1980) one got 99p Flying Instructional Pay from day dot! not much, but a little compensation for all that grief!