Sorry, but the job market is NOT a factor in the destruction of Portland. I work in staffing here and have a very strong read on our job market. There has always been a healthy amount of blue-collar jobs available (construction labor, service industry, manufacturing labor, etc...). We actually do have a strong manufacturing presence in Portland, both large and small company. Heck you probably buy Portland products more than you think (Benchmade, Kershaw knives, Leatherman, Warne Scope Mounts, CRKT just to name a couple).
The problem is the policies put in place by liberals. They decriminalized drug use, openly tried to defund the police, allowed lawlessness to prevail, allow homeless camping everywhere. I can go on and on. For those who fish the Willamette River for salmon, there's a real threat that your rig or catalytic converter WILL BE stolen. The rise in auto theft and petty crime has shot up exponentially. And to no one's surprise, it coincides right with Measure 110 (drug decriminalization)
If these losers on the streets wanted to work, they can find employment with some help and effort. The CHOOSE to be drug addicts and live on the streets. For the few homeless that are truly in a very rough patch in their lives, there are programs available. But once again, you have to put in some effort.