You might derive a benefit in about 25 years IF people are still permitted to sponsor their parents and IF the kid becomes established ($$$,$$$) in Canada sufficiently to afford it.
"Understand that the child is Canada citizen while parent not" actually means that it is legally possible to deport the parents and since the child is Canadian, he/she is put into a foster care situation with brand new temporary parents.
How could that happen? Let's say you arrive but are denied entry and your wife goes into labour.
The mother would receive her care for free because she'll be in detention and scheduled for removal the very moment that she's healthy enough. You'll be gone because nobody needs you for any of this, and the child goes into foster care because you can't deport a Canadian citizen.
You can get the child back eventually but you'll need legal representation since your return to Canada is unlikely.
You are going to a lot of trouble and expense in order to realize something with limited benefit and that could potentially explode unimaginably in your face. As far as bright ideas go, birth tourism is a time-tested loser.
They might hold your wife in detention until a Canadian passport is made available so that she can take your child out of Canada. Just think, once your kid gets older as you grow old, they can abandon you completely by hopping on a plane to Canada.