And BTW, their philosophy and ideology should certainly be taught. That should go without saying its so obvious.
Yes it is obvious and I'm glad to see you're not one of those newly educated public school products that puts emphasis on the ethnicity and religion of the Founders.
That was the point of the original post you referred to, that is, that many public schools discount the philosophical principles of the Founders in favor of their whiteness and Christianity, as if these traits are somehow more important than to study the development of a philosophy of government that could act to suppress the emergence of tyranny.
There are public school students who hate the United States because it was started by dead white Christian males.