Not sure what you are getting at. I posted to another who claimed his soul was "secure". I can't imagine how a person could claim that.
There was no discussion about "a Christian who would actively, consciously, contribute to the loss of their neighbors soul". Not sure where you got that from.
Mormonism is an anti-Christian cult which strives to deceive Christians and lure them away from Christianity, that is why Mormons require a Christian to become baptized into their no-Christian religion.
When a person takes an active roll in defending Mormonism against Christians on a thread, then they are not merely watching, they are actively, consciously, contributing, to what Mormonism does, which is to destroy souls.
This Mormonism cult thing is not a joke, or to be taken lightly, this is the most serious business of our existence.
No need to imagine; just READ:
John 10:28And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand.