Also, doesn't states like MA import a not-insignificant amount of natural gas from elsewhere to convert to electricity? Would like to hear about what's more efficient: direct natural gas heating vs natural gas -> electricity -> heat pump...
Yes, and for nominally climate-driven reasons MA has constrained the construction of pipelines and other facilities that would allow the cheaper delivery of natural gas for cheaper electricity… thus discouraging consumers like me from moving to electrical utilities that would net reduce emissions.
It's probably more accurate to say the concerns are about the environment rather than climate per se. There's more to protecting than the environment than limiting carbon emissions. (I'm not saying they're right to make that tradeoff in this particular case.)