"What causes gentrification is rich people moving here." Mr. Novick.

Kinda.  But there's more to the story: it is a city run by real estate interests where rules are not enforced, where the city refuses to control AirBnB and allows Vacasa to flout the tax laws.  It is tax compression in the inner Eastside.
It is tax breaks and grants thrown at real estate investors.  It's out of state money buying apartments and upping the rent to cover the costs associated with flipping apartment buildings.  It is letting heavy construction equipment causing local streets to crumble while Prius owners get the blame and foot the bill. 

I hope PDX does the right thing and elects Wheeler.  We need someone who is transparent with money and has no sketchy connections.