If I can demonstrate that the results of my "crazy" homeschooling is commensurate with (or surpasses) those of public schools, then what difference does it make. Yes, public school teachers have skills. Do those skills apply directly to the homeschool setting? Is there a difference between attempting to teach the one or two or so offspring compared to a classroom of strangers? Are parents incapable of attaining the necessary skills through any means besides university?

If it were reasonable to achieve "doctor" level results of medical care without being a doctor, then I would agree with you. The evidence shows otherwise. If I were getting poor results with my kids, they'd be back in public school.