It's part of the game of life. You play along to get along. Fighting against the system means your kid can't get into university because his education is not accredited.
Do an experiment of what happens when you try to be a rebel. Get out there and try practicing medicine without a license. You might be a fantastic doctor but you'll still get in big trouble because you're not part of the system.
Examples? Even the
Missouri Derpartment of Education acknowledges that they know of no case where loss of a highschool's accreditation resulted in rejection from a university. If it does happen, I would imagine that it's limited to very exclusive schools or otherwise extreme examples. As far as I can tell, Paul's point is that there is no national standard in secondary school accreditation, and that concerns over lack of accreditation (which is probably widespread throughout "homeschools" aside from those Accredited By Jesus™

are unnecessary. All you have to do is look at the extreme disparity in public education quality throughout cities, let alone states or regions, to know that standards are incredibly low.
EDIT: That should say "Missouri
Department of Education", but the typo made me chuckle at myself, so I'm keeping it.