I will say upfront that I do not condone or support annexation of Greenland, but I have to ask why on earth you or anyone else think that would inspire any mean

I will say upfront that I do not condone or support annexation of Greenland, but I have to ask why on earth you or anyone else think that would inspire any meaningful portion of the US population to organize a general strike? Whatever happens in Greenland has no impact on at least 99.99% of the US population, and a general strike will have no impact on the small fraction of the US population that would support annexation.