I went to a state school, and didn't get much prestige or many connections. I did learn how to be an engineer, and more importantly I learned how to be an adult. I think my time there was worth it.

Maybe this is true of liberal arts or business degrees? I don't know, but I don't think this is the opinion of anyone who went to engineering school.

If you missed “practice space to learn how to learn and to work with other people”, your understanding is too flawed to forgive the obvious so-edge take.

I assume that would fall under the listed "knowledge" category.

Perhaps, but to my mind knowledge and skills are qualitatively different.