I'll begin by responding briefly to Mr. Arseneault. On the one hand, if there is no decline as such in the main language spoken at home in Montreal, there certainly is one in the greater Montreal area. For example, Laval is becoming anglicized more quickly at the moment. There is also anglicization on the South Shore.
I'd also like to make a minor correction. Earlier, my colleague seemed to be saying that the mother tongue indicator should be excluded. I don't think we need to be limited to this at all. It's a medium or long-term indicator.
When a mother changes the mother tongue used at home, it becomes the mother tongue of the next generation. This need not be alarming, but if we were to transfer this principle to the environment, some people would say the same thing about a climate emergency and they would raise the alarm. With the environment as with language, the precautionary principle needs to be applied, and sticking your head in the sand is definitely not the answer.
Mr. Corbeil, you spoke about several factors that had an influence on the situation. The factor I consider central is the common public language. If French is the common public language, more newcomers would learn French and integrate.
Do you agree?