You're also 17 or 18 when you go. We were children. Alot of classes also end up sucking so you just power through it and get jaded about the whole experience.
Depends on how the hiring critera for the next stage go. If HR filters out everybody with less than a 3.5GPA right from the start then the C student who knows the stuff will never even get a chance, while the cheater will have the opportunity to bluff their way through the interview.
It’s just saying the same thing differently. The point was never to “power through” classes. It is just checking the same boxes with a different colored pen.