No I agree the rates for the pilot population would also increase with age. Again all I can say is it is not a problem here in Australia.
I was trying to think how many pilots at my company lost their medical in the last few years, I can think of three in ten years. One was for cancer which is not likely to incapacitate a pilot at the controls.
How about bus drivers with sixty passengers on board screaming down the motorway? No autopilot and no second driver to take over? Do they get forced out by age based criteria?