defending christianity from gnostic or cynical attitudes

I don't think my fellow conversationalist is a terrible person, but I do feel he is very jaded and his views are a little inferior to mine as they currently are (but then again everyone thinks that to some extent that's why they have different views)

the gnostic parasite - talk by james lindsay
https://www.youtube.com/watch?v=heDBHTtXJEQ

TIK history - the REAL religion behind national socialism/nazism (hint it's gnosticism)
https://www.youtube.com/watch?v=y011Pdrb3Sk