Even if that was true, the fact that all the other idiots are in self driving cars that are not crashing into you makes you safer.

All the bad drivers would be 40% less likely to crash into you. And since your are a 3x Driver, the only you risk you have while driving, are all the bad drivers.

Dunning-Kruger effect on display?

Not necessarily, making other drivers safer makes them less likely to collide with you.

Depending on how all the numbers would work out, making other drivers safer could well make you safer too. It might not, but it could.

Or perhaps it will make you 40% more safe than you already are?