They are not the only state for which this is true.
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People whose priests are cancelling mass should encourage the priests to actually contact civil authorities to see what the law says about churches.  I know of one situation at least where the law was completely reticent about religious gatherings, and further contact with state officials revealed that they were regarded as essential-- only, the state didn't want to come out and make that abundantly clear to the public.  What happens then is that churches simply assume they aren't essential and shut down. 
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Talk to your priests.  Don't let them assume that their states regard them as non-essential.  (of course, I realize with Fr. Wegner basically telling all his priests to stop saying public masses, even if a given SSPX priest's state regards him as essential, it might be a moot point for SSPX attendees.  But maybe not.).