Yeah it would be fun to play with...
I gotta think there are going to be some periodics in there that will be toggling the LSB. Like some hum from some device far away will be at the right tiny amplitude to toggle it in a predictable way. Also the ADC hardware could concievably get stuck.
The whole system breaks because someone didn't set up their pulseaudio correctly?
and what if you need 1TB of random data? With 48kHz audio you would be waiting 5000 years haha. 1MB is still more than a day