I find it interesting that this sort of nonsense seems to fly best in states without CCW - WI, MA, NY, likely NJ and CA.
You won’t be seeing this thuggery in the South, or if you do, it won’t be for long.
Massachusetts does permit concealed carry.
It is a hard thing to get but it has been lawful for a long time.
I have my grandfathers LTC, hand written in the 40’s by the police chief.
It basically says “Clarence can carry any gun, long or short, anywhere in town, in any manner”.
My brother has a LTC concealed in Massachusetts. Mine expired a decade back.