I definitely agree with this sentiment in nearly every case - goal of society should be one where these kinds of characteristics are irrelevant and discriminati

I definitely agree with this sentiment in nearly every case - goal of society should be one where these kinds of characteristics are irrelevant and discriminating in some other way to correct is generally a bad idea. It was mostly a thought experiment about how a software company could gain a hiring advantage in a clever way (if old people are undervalued by the market for dumb reasons). At least in the case of age the categories are clear (as opposed to more nebulous socially defined groupings of people).