A couple of thoughts on homeschooling.
The ones I have met tend to have less ability to mix with their peers.
Here, often, both parents are required to work to make a living, if one parent had to stay home and teach that would half the income and reduce the standard of living the parents want for their children.
While some parents are well educated [by the same system they are now decrying] a lot aren't, if the almost illiterate teach the next generation what will they be like? I don't see many "Greats" coming out of that type system.
f you don't like the system change it, vote, elect, manoeuvre to get what you want, don't walk away, fix it.