As for music, I don't run a political litmus test on the performers of every record I buy. But if somebody is especially obnoxious in the public eye about their liberal politics, I will go out of my way not to buy their records. Barbara Streisand is a good example.
You do make a good point about not ALL people/places being offensive, but until one knows for sure (i.e. has good advice), my point is that you can make a principled statement by not frequenting certain/many places. You and I would not be having this conversation, if something negative had not been intimated about Vermont in particular. When Senator Sam Brownback denounces being a Republican and declares as an Independent, then my attention will turn to Kansas, and reasons not to go there, etc.
If I were planning to visit Vermont, maybe I would post here and solicit the local freepers' input about some destinations, both to visit and to avoid.
I don't think that we are saying terribly different things, except that I might be a bit more strident in boycotting places/music/movies, once a liberal bias has been demonstrated. Alec Baldwin, Julia Roberts, Barbara Streisand, Madonna are good examples of obnoxious.