That’s a pleasing statement that seems true, but ignores the millions of ways that parents can be a bad influence. Over pressuring, taking away agency, just being bad study partners, biasing data as it arrives, etc etc etc.
Everyone wants to believe they will be a good parent. But everyone will fuck it up in some way. One of the *good* things about traditional schooling is exposure to a lot of different influences. Bad and good. The bad teaches you to value the good, the good teaches you all the different ways that you can learn.