Avira is wrong. It doesn’t say anywhere oseh maaseh amcha in regard to that pasuk.
Also, not every Jew is a tzadik. The very definition of a tzadik is someone is not a beinoni. Someone who is never mesiach days from the Hashem (at least according to the best of his abilities).
They lied to you in preschool. Get over it. Maybe give your kids some quality chinuch yourself instead of entrusting all of their initial Torah learning to a handful of underpaid young women who are barely knowledgeable themselves. As a general rule, you cannot fulfill your obligation to teach your sons Torah by leaving it all to women. This is a great way to have your child off to a bad start.