I should have elaborated a bit more. Since they cited Cruikshank, the spawn of Slaughterhouse which basically tossed the "privileges & immunities" clause of the 14th Amendment, could this MA SJC decision affect SCOTUS' reasoning to reconsider Slaughterhouse? Thanks for your comments.
For that reason only, I believe it is much likelier that the Court will leave the Slaughter House cases alone, than reverse them. I agree with the logic of reversing them. but that's the harder way to reach the same result.
John / Billybob