> One of the negative consequences of the “modern secular age” is that many very intelligent, thoughtful people feel justified in brushing away millennia of philosophical and religious thought because they deem it outdated or no longer relevant.

Isn't that a societal trait though? See English Christians attitude towards vikings, requiring baptism (or the prima signatio, kinda baptism-light) before they could deal with them, because they were savage. Or colons forcing natives to adopt Christianity, because what they had before was "primitive". There was wisdom and thought in both, but in both case the Christian side "brushed it away". Or capitalism and communism in the cold war. It feels like everyone with a belief system tries to force it onto others.