[sawthat]

Nobody lives there anymore, it's too crowded.

[duaneb]

Population density doesn't indicate anything about migration or wealth distribution.

[vermontdevil]

It's a play on Yogi Berra, a recently deceased baseball player, quote:

'Nobody goes there anymore. It's too crowded.'

[theandrewbailey]

What makes it crowded if no one lives there? Empty buildings? /s

[wernercd]

Woosh... That's the sound of the joke going over your head.