I wonder something it says on the IRCC website,
Family reunification
Officers should be aware that family ties will not automatically qualify the foreign national for non-optional or non-discretionary travel. Family members will be required to show that they are not travelling for a discretionary or optional purpose such as a routine family visit.
when a spouse is landing for the first time in Canada the CBSA well ask why they are landing now? what to say in this matter? the CBSA has a big list of reasons not to let people in including family members in, the list it's like 25 pages long, they can still deny sponsorsed sponsors in to the Canada if you say the wrong thing for your reason, I wonder if this will cause any problems for my wife to enter Canada for the first time for landing.