All the points mentioned here are correct but Canada's situation is not unique in terms of housing / rental inflation and healthcare challenges. I have friends in Aus, NZ, Singapore, Germany and I have heard all the same things from them as well. The thing is when people are waiting for PR they only think once I get PR life would be better and sometimes (or may be many times) it is not true.
Examples from Australia
https://www.reddit.com/r/australia/comments/15hfjtg
https://www.reddit.com/r/australia/comments/14ifdx0
You can talk to people from UK / Ireland and some think Canada is better. You can see many posts on Reddit of people from there trying to immigrate to Canada.
The fact is that things were getting bad and Covid kind of has messed up things all over the world for middle class. The geopolitical scenario hasn't helped and with all the inflation, interest rate hikes and mass tech lay offs everything is just messed up. May be things are better in GCC countries. But all the countries where one has decent chance of immigration are facing very similar issues.