Not true.
An applicant can request the VO for their country of nationality or, if they have been legally admitted for at least a year, their country of residence. It can be a bit confusing but for those residing in Canada, the country of residence VO is Ottawa. It is still an outland app, processed according to outland rules and outland processing times, entirely different from inland. If you were admitted to Canada for at least a year, you could have requested Ottawa but your app will not be automatically sent there because you are in Canada.
The majority of the time, CIC sends the app to the requested VO. There are a few exceptions:
If the applicant's requested VO is backed up and has long wait times, like Islamabad, the app is sometimes sent to a faster office, like London or Ottawa.
If the applicant requests the VO for their country of residence (i.e. a Polish person living in Canada requests the Ottawa office, an American living in Australia requests the Sydney office, an Indian living in the UK requests the London office), CIC will sometimes ignore that and send it to the VO in the country of nationality anyways.