How to report suspected tax evasion
You can report suspected tax evasion over the Internet or by contacting the Informant Leads Centre. Your identity will not be disclosed and you may provide information anonymously.
I totally agree with what you said. There are quite a few requirements to be a nonresident. And also, there are lots of people who want to hold immigration status. If you prove yourself as nonresident, then you have to think how to meet immigration requirement about residency.
It is unfair that you want to have all benefits, but no obligations.