You certainly are entitled to your opinion, but your reference to “Greek kids” is confusing. You are aware that the article discusses Biblical and pre-Biblical Greek, aren’t you, and not Greek spoken today by “Greek kids”??? And forgive me if I am ignorant of what “IE” is, but Russian is a Sanskrit language using the Cyrillic alphabet, which bears very little relation to English. My dad, a chemist, was fluent in Russian because so much of the research he studied was Russian.
That's even worse. Including anything like that in school materials is basically child abuse.
My daughter is minoring in Ancient Greek...I asked her “Will this help you on your MCAT verbals? Does it help you understand English better? Will you be able to go to Greece and speak with the natives? Is this useful AT ALL in the modern world?” Nope, nope, nope, and nope.
But she thinks it’s cool she can read the gospels in the original language.