by this logic we need to see if visa is approved for people with severe acne, or burn marks, or premature balding, or saggy body, or scars on face. Calm tf down. They have very real reasons on which they reject, they arent looking to hire a model they are looking to see if you will remain in valid legal status and wont be a problem to the healthcare or a danger to Canadians.
Now unless in your mind there is a conspiracy theory where visa officers are secretly being told to reject obese people because Justin trudeau wants only pretty aesthetic looking people in Canada, then well I guess you will have to wait for the result of your visa for confirmation.