Disagree, a lot of what I learnt was how to read and understand scientific literature and write my own reasoned and evidenced conclusions from that. This would have been much harder without guidance.
Discussion
I see your point.
I agree in that guidance provided in a formal education can be extremely helpful to learn.
But in the end, if you understand and learn, will depend on the work you put in. At least to a great extent.
What remains after an education depends on how you approached things.
Going to university can have the positive effect of likeminded people working on the same topics.
But really learning and thinking is something only you can do.
Obtaining guidance, is something you have to accept and take on.