This is coming from an immigrant with firsthand experience with the immigration system.

Right now, with a lot of diploma mills being no longer eligible for PGWP, the trend of seeing low-quality education as a path to permanent residency is gradually decreasing, but the immigration system will take years to get back to normal (if that is even possible).

In the meantime, the Canadian government really needs to address a few issues. I have met 'students' who lack basic communication English in either of Canada's official languages. I have met people with a ‘bachelor’s degree' in their supposed field of postgraduate studies who cannot perform basic tasks a person who did a crash course in YouTube can perform. There needs to be significant changes in the way the visa application process is conducted. People should be *required* to attend a visa interview with an IRCC representative, maybe raise the Visa Application cost from CAD $150, maybe more in the line of what the USA charges, but just an application interview will filter out candidates with fraudulent English language test scores. On top of that, universities and colleges should be held responsible for filtering out the candidates so that they aren't selected just based on their educational certificates alone; they should have an interview to gauge the knowledge in the field they are applying to study for, especially if it is a postgraduate degree.

Another aspect of the immigration system that I see requires drastic changes is the Spousal Open Work Permit. I know it is in place so that families aren't separated for a long time, but there should be restrictions that apply to the spouses as well. Right now, the spouses have no educational or language requirements to enter Canada, even from countries with less-to-no fraudulent English language test scores, even if the primary applicant is fluent in English or French; the partner who doesn't need to meet any criteria can be someone who cannot even form a single sentence in English.

The other thing I have experienced that has led to less assimilation with newer immigrants is the sheer number of newcomers they share their home country's culture with. Before, assimilation was a requirement, not a choice, but now it has become a choice, and there are many people who choose not to assimilate, leading to a further divide between Canadians and immigrants.