So instead of sticking to the universal definition, we should instead listen to the made up versions for each individual person. Brilliant!
if you want a more broad explanation of the concept, you can read this encyclopedic article on wiki about Meritocracy. It much more complete and if you want to really understand why meritocracy is not working again > Leftist library section sociology.
That video is essential (that's why its in Yellow):
What you must understand (and sadly I did not find good content explaining this in English as of today) is that the vision of Kant, Meritocracy, is what gave birth to liberalism and liberalism can be traced back in each and every aspect of our daily life.
For example:
Liberalism and meritocracy are the IDEALIST vision of human nature and the idealistic vision that we are in full control of our action, emotion and situation and that we can therefore better our situation by bettering ourselves. In the majority of the case, this is not how reality works.
We should strive to do our best, but we simply can't become billionaires or CEO with just hard work, there needs to be more. And that's where the notion of capitals is important. (video 1). We might be lucky and get out of our social class one step further, but those cases are rare. Poor will mostly stay poor and rich will always stay rich.
Its important to understand the concept of social mobility.
https://www.oecd.org/stories/social-mobility/
We can change that. But for that, we must fight together, not alone.