Push what through? You mean keep things the same.
I'm also unclear about "no data." Are you suggesting that the entire body of cognitive research in regards to age is somehow false? Even if you are completely unfamiliar with the research, surely you have existed, right? You've actually met old people? The suggestion that there's no "fact, reason, or real logic" to say that cognitive ability declines with age is completely absurd.
The distinction doesn't fall apart at all. Everyone turns 65, unless they happened to die earlier. Everyone. And every single one of those people had the exact same amount of time on Earth up until the point they turned 65.
That you would think there is a comparison between racial discrimination and age discrimination shows a complete lack of moral nuance. It's not about social ick. Again, if you somehow believe that there is no cognitive effect to aging, then I suppose you can get a little closer to a discriminatory argument. But there is, factually. There is not, however, any evidence that having darker skin makes you a shittier pilot. These two are so different that I'm shocked I have to write this much about it.
The age at which you can drink, vote, own a gun, serve in the military. The age in which you can be in the House of Representatives. The age which you can be a Senator. The age that you can be President. The age that you are allowed to draw social security. The age that you get a better rate on car insurance. The age that you get discounts at movies. The age that allows you to move into certain communities (55+).
I think you fundamentally fail to understand what group-based means. Rather than screening millions of people, you find a statistical point where it will apply to the majority of the demographic. I don't know what this "10 people taking a vision test at a time" nonsense is, but it doesn't apply to anything that we are talking about.
It's the "appropriate framing" because it supports your point 🤣. The definition of lawful is that it is done by the government in accordance with that government's rules. That's what "law" is. That's exactly what's happening here, so this isn't a legal issue. You can argue it's a constitutional issue, But that argument has failed under the system and as such is definitionally not a constitutional issue. That only leaves the moral issue, which brings it back to my framing, not yours. You believe you have a moral right to work in a certain job until you die. I do not.
Also an incomplete analysis. Because the check ride system does not screen for all issues. For example, it does not screen for heart issues. We have another test for that. Just like with a cognitive test, the more responsibility you put on the check ride, the more complicated it needs to be. And at least at my airline, check rides are not even remotely complicated. They are cookie cutter, scripted, rehearsed, and unbelievably babied. But you can do that because we have a whole bunch of other processes in place that act as filters. One of those being the age filter. You can get rid of the age filter and make the check ride filter more robust, but just like with having cognitive testing, a lot of people aren't going to like the results of that. It is also simply more complicated.
Again it is one thing to argue that 65 is not the correct age. But calling it "bad" discrimination is disingenuous. It's denying the reality that old people lose their marbles. Discrimination in the literal sense is not bad. We do it for all sorts of things. What you discriminate, and how you discriminate is what determines if it is right or wrong. This rule does not exist because people don't like old people. Even if you accept at face value that it has nothing to do with safety, which I do not, and it is purely about job progression, even that is being fairly applied to all participants, and as such is not immoral.
Another factor that determines morality is the presence of choice. You absolutely have a choice to participate in a unionized flying job that has equally applied age restrictions, or you could work elsewhere that does not.