Article doesn't do a good job of covering "little thirds", mistresses who are settled there with an apartment and allowance, or of unaccompanied "college students" who spend way more time vlogging than studying. Anecdotally a shitload of people following those descriptions have been shipped in, an influx that has slowed drastically with real estate taxes meant to punish this behavior.
The city of Richmond just south of Vancouver is mentioned but its import is arguably understated by the article. It's a fascinating place, and Richomond's "night market" (sort of a combination fair midway/flea market) is an electric experience soon to be imported to Silicon Valley, where it will be a huge hit.
Westerners generally speaking have absolutely no clue about the importance of a stable currency, which implies a stable political system, a nation that respects rule of law, and a notion of property rights. This leaves only a few countries, namely the US, the UK, and a couple of Western European nations. Wealthy Chinese absolutely do, and they are scared out of their minds that the tyrannical regime there will separate them from their assets. These people remember the Cultural Revolution. So the West is the first resort for relatively safe storage of their often questionably-gotten cash. (More adventurous/volatile places to invest, like Africa, are riskier but often have a higher upside.)
Because I apparently hate good karma I will observe that we used to love going to Vancouver, especially the weeklong jazz festival, but we don't any longer. Like Seattle, the fun places to walk have largely been overrun by street people who use hard drugs and leave needles around. None appear to be Asian.