I get your point.  Yes, I should use an entrepreneur's perspective, not an employee's.
In order to incorporate, E-2 VISA requires me to apply for an EIN, making my corporation liable for taxes.  I've read that foreign nationals can only start S-Corps only if they're permanent residents or pass the substantial presence test.
As a foreign national, can I register a tax-exempt organization and still qualify for a E-2 VISA?  Based on what I see, yes, but probably with caveats.
Then wouldn't your "Exempt Organizations" course apply as well?
I ask these questions because you had mentioned that the "Exempt Organizations" is the least applicable to Canadians.  It may just mean that I need to close some gaps in order to make it work.