Maybe Canada could suggest it to the U.S. as part of the deal for Canada to become a part of the U.S.
When the MOI have responded accordingly it is not a “grey zone.” You are more than welcome to ask them yourself as others have. I have even asked TECO regarding my wife when applying for her visiting visas before we got her residency.
@Andrew also asked and got the same response. (Correction he suggested someone else to ask)
When my wife applied for her 3 months visiting family visa we told TECO she was doing online work for her private clients. They said as long as it’s not for a local employer/customers it’s fine.
Unless there are some serious policy changes I.e. you get an ARC and can renew indefinitely… it is completely useless.