I am highly suspicious of claims that Act 250 is the biggest culprit when the housing crisis is a national phenomenon informed by a number of factors of our economic system and social policies. As of some 2017 data I found, normalized to population size, Vermont isn't even in the top 10 worst off states..

I am not saying Act 250 is not a factor, because obviously it fits squarely in with "our economic system and social policies", but a generic blanket of blame is not called for either, especially with the weak "might be" qualifier. That said, I'm also not sure how much it even applies to this story, because there was only one mention of Act 250 in it, and in a more neutral context that did not look to assign blame to it.