I find a lot to sympathize with in this article. I see no reason to be opposed to allowing Vermont to secede. (However, I do think the secessionists should not underestimate the costs of secession, which they may be drastically underestimating).
Nevertheless, secessionist talk in New England makes me nervous. Last time there were big secessionist movements in that part of the country (William Lloyd Garrison "continued to support secession of the anti-slavery states and publicly burned a copy of the U.S. Constitution at an abolitionist rally in 1854"), they decided to stay in the Union but only after resorting to war to make sure the rest of the states in the Union did things their way. Let’s hope it doesn’t come to that this time.