As previously indicated I think it's rather that times have changed. In France I've noticed that lots of the bikers no longer salute.
My father remembers the days when with the AA badge of his Morris 8 he was saluted by AA patrolmen on motorbikes. Ah those were the days...
And as an aside I find I get a lot of salutes from bikers when in the Aero 8 but none when I'm in my wife's 2CV. Strange….
Cheers