I am drawn to what you have to say about school being a place where we come to learn together. Learning is social and social skills take time to build. Whenever I am trying to learn something, I do a better job when I am with others - bouncing ideas around and being challenged to think deeper or see another side of the equation.
Those social skills are key as students move into other educational institutions or the workforce. Even if we work at a distance from others in a one person office we still rely on social skills at some level.
Building meaning, passion, and learning in a school environment is valuable. As an adult learner, the classroom setting still has value me for all the reasons you mention in your post. I think you are right, we need to find more examples of schools who are building schools that live this vision.