You might feel, functional, you may even appear functional to a casual observer, but testing will show significant degredation of reaction times and motor skills. These numbers are not pulled out of the air at random.
Statistical analysis is used to determine risk profiles and set standards. I bet if someone cares to dig they will discover a sharp drop off in bird strike risk somewhere below that 8000 limit. Doesn't mean risk is gone above, but means someone has determined the numbers are now low enough to reduce the risk profile and standards.