Yeah, no… Not in the least bit… But A for effort
Gnosticism, is "Conspiracy", is a loaded term, designed by dissenters to paint with a broad brush.
Gnosticism as a specific movement, doesn't really have much of a leg to stand on.
All we have are libraries of spurious texts, some rooted in the Christian faith, some rooted in other traditions.
The argument of gnosticism verses Christianity is a red herring, when you learn the Christian faith, because Christianity is the great Redeemer of all faiths, reconciling all Truth under One True God, so that Christ is all, in all, through all
I become more addressing convinced that it is Gnosticism which became Christianity, and not the other way around.
I see Gnosticism being the source of the Satanic occultism in the Catholic Church, and those who were hunted down we're not Gnostics but the true faithful.