[citation needed]
A tax was established, yes, but was it reasonable to do so (was it reasonable to expect that it will do much) and did it do anything? It seems the answers are no to both those questions.
I think it's a good signaling tax though. (I'm 50-50 on the extra tax for foreign buyers. Ethically there shouldn't be any difference based on where one's passport is from, but practically of course there is.)
Anyway, the real problem is constrained supply. Vancouver is still a fucking suburb compared to dense cities.
https://www.youtube.com/watch?v=evYOhpjMql0
https://www.statista.com/statistics/960174/vacancy-rates-res...
https://www.cbre.nl/-/media/cbre/countrycanada/images/insigh...
https://vancouversun.com/business/real-estate/three-years-in...