We have a word for that: "meritocracy". The fact that we may have failed to achieve this fully doesn't mean we should throw out the word.
By the Mozilla logic, we should also throw out "democracy" because our government(s) have failed to include all stakeholders; throw out "feminism" because a few of them have demonstrated that they're anti-male rather than pro-female; "education" because we've so badly failed to properly educate our youth (and adults!).
Really, pretty much everything we've set as a goal for ourselves, we've failed to achieve in its entirety: such is the nature of goals. But those lapses are just further goals for us to cover. Throwing up our hands and changing the goal posts, or at least how we reference the goal posts, isn't going to get us any closer to them, and seems more likely to confuse the issue, taking us at least somewhat farther away.