Nevermind... I found my answer:
"Spouses and dependent children are also exempt from the clause about excessive demand on health care so you do not have to worry about them being refused for that reason."
YAY!!!!!!!!!!!!!!!! So I guess I don't have to worry about that. BUT, why require a medical exam if spouses are exempt from the clause??? Makes no sense.
My guess is for some extreme issue that would be a direct threat to Canadian health not merely someone who would require significant medical attention, much like for spouses evidently finances isn't an issue however I'm sure they can deny you if they see you're older and never work, have likely no way of working, no work history, or are inevitably going to require social assistance. If one considers that many children with scoliosis go untreated, just as one example, what it turns into later, it would be inhumane I believe to deny PR to an applicant of a sponsorship app just because they will inevitably require quite a bit of medical attention to either correct or cope with a personal disease.