They simply don't care for the second part. Some even consider it a safety feature (to be known well in advance) and modify exhausts to be louder accordingly.

The amount of time me or our kids were woken up by some ferrari, maserati, chopper et al flooring it on purpose on nearby intersection past midnight has been many, punishment 0 nothing. After moving to rural countryside its one of many aspects I am certainly not missing from previous life and would have hard time coming back to lower quality of life in cities.