I did not read all the posts yet but will after putting this reply.
I am a Gnostic Christian and I can tell you that we do contradict the Christian message.
That is why from the get go, we called Yahweh, a good god to Christians, a vile and immoral satanic demiurge.
This does not mean that all of the sayings in the Gospel of Thomas go directly against Christianity but it does show how our interpretations will not enhance Christianity and their good perceptions that are actually evil.
Christians think it comes from without while we Gnostics know that it comes from within.