As far as implementing the "universal competency of critical thinking"... I said no such thing and I don't think any sane person would think it is possible.
You actually did say such a thing. You said...
Demand that children are COMPETENT in critical thinking...
Now, words have meaning, you know? The word "demand" tends to mean:
a forceful statement in which you say that something must be done or given to you.
The word "children" was used as a collective with no qualifier, which implies universality, at least from the point of implementation of whatever grotesque plan you had in mind.
Your demand was competency, in capital letters no less. Therefore, you are suggesting that at some point in the future, there is universal competency in critical thinking skills.
There you have it; that's my critical thinking of your forceful suggestion.