Problems after immigrating to Canada.

Canada can file for divorce unilaterally as you said, but it still needs to divide the property. If you have children, you need to pay alimony. Doesn't mean you can file for divorce so easily today and tomorrow.

Besides, we need to know how he immigrated. If he immigrated by his wife's relationship (for example, his wife's brothers and sisters or parents can help him apply for immigration), he will divorce immediately after he goes, and his wife may suggest that he is using her to go abroad and ask the Canadian government to expel him.

Besides, you said to wait until he was stable before getting divorced. What does he mean when he settles down? Some people need a year or even years to settle down (looking for a house, a job, a doctor, etc.). Do you think it's so easy to settle down in a strange place? Unless he has a lot of money, how can he settle down so easily? Sounds like he's making up a story to trick your friend into stalling.