In addition to being xenophobic, some allusions here are simply sexist and of inhuman reasoning...
There is always an implication and a presumption that the immigrant person is a “fraudster” who wants to play with the laws to his advantage.
Even a person passing through (visitor's visa) can have a child in Canada by chance, it's not a crime... A temporary resident (student, visitor, temporary worker, etc.) can also be pregnant.. Before I got here, or even (conceive and have) a child here. It is not forbidden.
Even someone without status can conceive and have a child here: The human reproductive system does not require immigration status to function properly.
Let's cut to the chase: If ius soli is something that annoys you, you can always pick up a Conservative Party membership card with Pierre Poilievre and campaign for the abolition of ius soli.