No it doesn’t. Massachusetts is full of working class people.
I think you might be confusing cause and effect here. Perhaps the people in MA are “rich” (I would say, doing well. There are tons of working class people in MA, they’re just not necessarily living in squalor) because the dems took care of them. Almost as if we have tons of data backing this up… That Democrats consistently do these types of things, while Republicans constantly walk them back.