Not sure why you’re downvoted but I agree. First off most who claim they work 80-100 hours aren’t actually doing that. It’s what they demand of others verbally and what others pretend to do. Everyone knows everyone is lying. And even if they’re at the desk, their productivity is not as good beyond 50 or so hours. Maybe even lower. I doubt 80 hours is 2x 40 hours. And as you said, in any field, it’s not about time but skills, passion, etc.