> Your entire comment is just made up with no evidence.
Quite the opposite. See for Montreal a recent article https://www.cbc.ca/amp/1.7445844
Officials estimate 4k airbnbs which gives 0.2% of all residential dwellings.
Who cares about residential dwelling as a whole. Most of it is occupied by owners, we are talking about rentals and 4000+ taken by short term rentals is insanely high and sets the prices for what's left too.