Why is a baseline bulk level of education the goal? People are different, people live in a society where they can ask others for help. People don't retain most of what has been crammed into their heads, and the fact that they were threatened with social exclusion if they didn't cram it in gives many of them an unhealthy attitude towards knowledge that will take them decades to unlearn. Many subjects are propagandistic or taught in a way that makes them irrelevant for the rest of one's life.
People learn how the mitochondria work but not how to recognize a stroke. How to write a formal proof about triangular equalities but not how to untangle a legal document. How to recognize a baroque painting but not how to make art you enjoy. How to compete at sports but not how to listen to what your body needs. How to memorize what an authority says but not how to pick apart lies.
So sure, let everyone follow a completely different education. Let them learn things at their own individual pace, let them focus on the things they care about and let them use their own interest as a guide. Maybe some will be functionally illiterate, but that is already the case.
It can and it has done creative mathematical proof work. Nothing spectacular, but at least on par with a mathematics grad student.