I'm with the OP, I think it is bull, and justifying it with "because gameplay" is bull too. It would change baseline control interface a bit, making it more accesible, but beyond that, "gameplay" can be tailored in myriad other ways.
Hmmm, not really. It's a safe bet they've tested the suggested system and didn't like the results and that what we have is deliberately designed to discourage players from using it extensively in combat to prevent it from becoming a matter of players just orbiting each other with their weapons constantly facing their opponent. I'll bet good money we're stuck with it.
For the record, I don't like it either and only use FA-off in very short bursts and only when I'm pitching about one axis.