I used to be strongly on the side of "Turn that sh1t off, it's only making you feel like a hero." I have the good fortune/stupidity of getting to work with advanced students, and I've had my fair share of frank but PC conversations about drivers aids.
But....then I started driving something with a bit more at stake, and something that is far harder to keep pointed straight....so I'll admit, I kept the PSM system at the first De until I had the confidence things were not going to end in tears. As usual...turning it off was a non event, and actually led to a few seconds per lap faster times and far more enjoyment....but I know the fear factor and resistance to believe in your own abilities. I'm still going to push people to believe in themselves, but I have a bit more empathy now.