Also please be more skeptical of thoughts of the form "X is Y because of hot take Z". Reality is complex and things have many causes. Montreal has a long history of doing city planning differently than other cities in Canada.
https://www.cbc.ca/news/canada/montreal/montreal-real-estate...
As for examples of xenophobia, I don't know of any other places where they have a separate language police, I know personally of non-white owned stores being harassed and fined for having the wrong accent on their french sign. There are countless politicians who've blamed immigrants for their woes, Jacques Parizeau being a famous one for blaming the Ethnic votes for their loss. CAQ just took a majority, look up Bill 21.
Anglo Brain Drain is a real thing too, and it's the major thing that's on some community's mind https://montrealgazette.com/news/brain-drain-brain-gain
The only thing i feel like parent could be referring to is the language laws, but the reasoning here is that they are necessary when surrounded by english (and has nothing to do with race). Plus language laws are barely respected already.