So far I am not affected by this but I know it’s coming.
Having said that, as far as I can determine from reading a LOT of discussions on this what you are saying is NOT true.
From what I have read, if you are in a state affected so far, Amazon will now collect for OUT OF STATE sellers, but the people who are domiciled IN those states are still responsible for the collection and payment of their sales taxes.
Hopefully, a seller from PA, WA or wherever can chime in and let us both know for sure.
If I’m correct, it would explain the note on MN. If not, then it’s just typical Amazon “let’s confuse people even more” stuff.
Also, go back and read what SELLC said when they replied to you a bit ago. They are still collecting and remitting for their state.