No, it's a recognition that we aren't going to have a test, so we have to have an age.
If we have a test, a lot of the guys who really want to stay past 65 would have been kicked out by 55. No one wants to open that can of worms.
Air guardian has an interesting perspective from his particular operation. But the passenger airliners do not go to outfields once every few years, you simply don't need someone with 30 or 40 years of experience to safely operate. That doesn't mean they can't safely operate, but this argument that you need decades of experience to do this job is just laughable. It's a cookie cutter operation even at some of the "challenging" airfields. Yeah, I don't want to send a 23-year-old brand new Captain off to Guatemala on his own, but no one was arguing for that.
In the passenger carriers the biggest threat is a compound emergency that requires very quick decision making. Considering most 65-year-olds have never even had an engine failure, longevity does not contribute to that. A focus on training, and mental quickness is what will separate pilots after about 10 years of experience.
Like tac airlifter pointed out, slowing down and asking for clarification alleviates the majority of passenger carrier mishaps. You don't need 30 years of experience to do that.
If we really want to start down the cognitive testing route, the 60 plus crowd is not going to like it when they start showing the cognitive decline curve on a chart on CNN every time there's a mishap. At a certain point the people in the back of the plane are going to ask why their pilot is lower on the curve. Yes, initially there will be a threshold set based on the average 65-year-old, but that threshold will be a lower score than the average 55-year-old or 40-year-old or 35-year-old. Once you start quantifying something that costs billions of dollars when it goes wrong, people will ask "why are we settling for less than the best?"
No one cares when a few rich people die in a business jet, which is why everybody 65 and older can continue to fly in that career. This is a "problem" that does not need to be solved.