Why Are SF And NYC Now Hellholes?

Does the "liberal DA" argument hold water?

San Francisco and NYC, long the bastions of the tech and finance industries, have seen some rough times of late. San Francisco has been maligned for seven years at this point as some urban hellscape where you can easily steal $999 worth of stuff from CVS, and everyone on the street is OD’ing. Here’s one of those takes in video form:

And here’s Cash Jordan on the decline of NYC as evidenced by its subway system:

So what’s actually going on?