My view
When I sat the CAA UK ATPL written papers my intention was to PASS, by 0.0001 % more than needed.
I was self funded, and flying freight over night, and doing written papers in day time.
Sitting next to me for most of the papers was a Britannia sponsored candidate. He wanted 99.9% to ensure that he was top dog in his intake.
Horses for courses.
I have almost 50 years in corporate operations.
He retired many years ago, having had an equally interesting life.
The aim is to PASS, by how much depends on your needs, and even perhaps ego.