> Are you suggesting full-equality, like zero-crime, is something that doesn't exist? Or that our notion of what equality is evolves?

Both, to an extent. Avoiding problems in a large company is presumably a constant uphill struggle, and certainly society's view on it does evolve (often quite rapidly; I personally went from strictly speaking being outlawed before 1993 to having employment protections in 2000 to being allowed to marry in 2015, for instance).

> as it only requires that opportunity be similar

Even if you restrict it to that, it remains a huge problem for employers. To take the most basic example, there have been _endless_ studies showing that blinding resume review by removing names etc substantially changes outcomes in the very first stage of hiring (by impacting who gets called in for interview).