Actual affirmative action programs do not include the exclusion of racial or gender groups, so your comment is a non-sequitur regardless of its validity in isolation.
> Equality of opportunity will never, and can never guarantee an equality of outcome.
Which is why its likely affirmative action will always be necessary, though the calibration will need to change over time, because while a cohort having equality of opportunity between subcohorts does not, as you accurately describe, produce equality of outcome, inequality of outcome within the cohort does guarantee inequality of opportunity in the successor cohort.
However, we're nowhere near that sort of nearest-approximation-of-ideal situation where the inequality of opportunity we are concerned with leveling is merely the result of the result of the inevitable inequality of outcome in a prior cohort with equalized opportunity; we still see historically disadvantaged groups (by race/ethnicity, but also gender, gender identity, sexuality, and other axes) continuing to be disadvantaged not only by durable effects of past de jure and de facto discrimination, but also in many cases by overt and covert current discrimination.
> The vast majority of people under under 60 do not sees these type of policies as fair or good
Every poll I've ever seen breaking out support for affirmative action policies by age groups, and I've seen a lot over the from the early 1990s through the last couple of years, has consistently found support higher among younger Americans. (And also shown overwhelming majority support for Affirmative Action generally, though only minority support for the kind of strict mechanical preference measures which have generally been eliminated many decades ago everywhere except college admissions.)