Please, don’t try to put words in my mouth.
Most States in the USofA *require* that homeschooling parents (or whomever will do he teaching) provide a curriculum or a lesson plan that meets the minimum requirements of Public Law.
Using a ‘commercial’ product allows those parents that don’t have :
The time
The education
or the desire to produce such a document - yearly - to home school and still have a good idea of what the child will have learned at the end of that road.
Contrary to your assertion, if the parent is the teacher, the child is indeed, home schooled. Your assertion seems to assume that only a single choice exists for home schooling -
that is demonstrably not the case.
May I suggest you spend some time on the web to satisfy yourself about the many choices offered for ‘commercial’ homeschooling material - and the costs, or lack there of, for those materials. /.
Like I said, replacing one group with an agenda with another group with an agenda. It’s not homeschooling unless you yourself do it, which most people cannot affor.