I think your suggestion of discussing Ignorance—Invincible and Vincible - is a good one.
Observing the perverted sects in this forum provides us with a subject group of the ignorant.
Minding our P’s, and Q’s, we can place into the invincible category those who will likely cling to perversions no matter what, even as they are dying and traipsing the path to hell.
We can go ahead and predestinate them. Why not, if the Spirit of the Word convicts us?