Yes. Stress would invariably be reduced for the family and for the person. If you extend it to 50 weeks you would bridge the time between treatment and illness and the time you get CPP disability.
You can imagine going 30 weeks or so without income and having to depend on welfare. That's going to create a huge stress for a family, for the individual, cause more illness and a downward spiral of sorts for the individual and for the family.
Covering that gap from illness to the time you could potentially get CPP disability is make-or-break for a lot of people.