You can hear a pin drop in the Financial District after 8PM
I think this is an outdated sterotype perpetuated by those who do not spend much time in the Financial District. Was it true at one time? Nearly certainly. But even in the last ~7 years that I have been working here, things have livened up quite a bit. There are more decent bars & restaurants at street level opening every year.
By no means am I saying it's as popular and busy during non-workday times as some other areas, but it is far from "pin drop" when I leave work late or head in on the weekend.