Reducing even skilled immigration levels if/when post-covid unemployment is high (which it will be for years) vs keeping the flood gates open regardless of unemployment levels?

O'Foole says he'll reduce skilled migration during the Covid recession, but he'll make up for it with family-based migration, which is much, much worse. From the document you linked:

... If unemployment remains high, an O’Toole government will shift the immigration stream from Skilled Workers to a higher proportion of Family Reunification applicants. ...

As long as the immigration continues, the differences between Turdeau and O'Foole are meaningless. Everything stands or falls with immigration. Immigration isn't a minor policy issue any more, like it was in the 1970s. It's the single biggest threat Cuckistan faces if it wishes to survive. If the immigration doesn't change and drastically, a lot of people are going to have to switch countries or adjust to a turd world existence in a dirty, commie Chinada.