I don't see whats not true about it, before this server update all you had to do to outrun stingers was fly in a straight line with afterburners on and they just exploded behind you virtually every single time. Theres a video on youtube after the client side patch showing a pilot flying towards the stingers launch point and the missile just exploded on the helicopter and done no damage. After the client side patch people could lock on all they wanted, the missiles were bugged badly and rarely if ever hit.
Earlier today i was using the lav-d and seen jets outmanouvering my aa missiles, something that was supposed to have been addressed but of course with dice its usually the opposite of what they say. The few times i did get hits it seems to take 2 direct hits to disable an aircraft now, i got a couple of 2 hit kills but ive no idea what health the aircraft had at that point. Shoulder launched stingers are probably the most pointless thing in the game as their range means you've literally to be knocking on the aircraft canopy to get a lock.
Your point, as I understood it, was that after the last patch, you could still outrun heatseekers etc. That is not true after the couple of hours of testing that I did last night.
It does take two direct hits to kill a Jet now, however that was clearly communicated in the last patch notes. The main difference since the latest patch is that when you fire a heatseeker at a Jet, unless they are quick enough to turn around (which is much more difficult to do), then you will get a hit. When you combine this with the fact that the AA locks on faster than the flare reload time, it means that if you are caught in a dogfight, then there is no escape. To my mind there should be a lower ceiling for lock-on which would enable AA to suppress Jets (the way it is used IRL) rather than dominating the air space (I have no idea what the range/accuracy of heat seekers fired from a ground position is IRL).
I believe DICE didn't promise to fix the ability to out-manouver missiles, but to make it harder (which it is).
As Westie has point out, the AA is so powerful now. As a Jet pilot you have too be very careful not to get to close to these things because their cannons will smash you in seconds. Combine this with the heat seekers sticking more often and it makes it very hard to have a good dogfight without some noob in an AA trolling you.
Your attitude seems symptomatic of the fact that DICE seem to keep trying to please everyone who complains that one thing is overpowered. As you have mentioned it's a cluster f*&^% now.
If they had just left it the way it was in the beta, while focusing on performance and stability issues as well as clear bugs/exploits then BF3 would be a much better game.
Personally, I have my 100 Jet stars, so I milked it while flying was enjoyable. I think I'll join my clan more often on Metro and the close quarters maps from now often. Either than or take up Heli flying lols. Westie, need a co-pilot?