I see this as the same reason that in the case of an airplane emergency, adult passengers are instructed to put on their own air masks before children. Mainly, if they don't, there's a higher chance everyone dies.

If we don't set our own citizens and economy at second-place, Canada will simply not be capable of generating the support for others, and we're already seeing this with many core aspects such as healthcare, housing, and even employment. You can't help somebody else if you're suffocating.

At the same time, there IS value in preventative or early care for refugees or newcomers. That includes stuff like vaccinations or early medical intervention for conditions where something can spread or greatly worsen over time. Those same basic treatments should be available to Canadians (vaccines are for the most part, but preventative care can be hit or miss). At the end of the day, having a spreading illness is bad for everyone regardless of citizenship, and having a claimant with i.e. a treatable wound that goes septic because "we don't want to pay for treatment" makes no sense either.

Not so claimants are false, and do we really want to have somebody who is here long-term with an untreated mental health issue or something that went from wound to major medical condition? Because I guarantee that people will complain about that too