I don't think it's salvific.
But Christians do not realize what the Judgment Seat of Christ means.
Christians "Jesus loves me and forgives all my sins" means they will face a real accountability and fearful God for their unrepentant and deliberate stubborn high-handed sins.
I've met God in ways that shook me to the core, and I understand the atonement as much as anyone.
When God "chastens" his children, he doesn't just tap them on the wrist.
It's genuinely frightening what some Christians will face.
The idea that Jesus' Blood makes them all get off scot-free inculcates a spoiled and undisciplined spirit.
And that servant who knew his master's will,
and did not prepare himself or do according to his will,
shall be beaten with many stripes. (Lk. 12:47 NKJ)
Please notice this is a servant of the Master—not an unbeliever.