A law passed in 1795 has nothing to do with what Benjamin Franklin wrote in 1772 about the Somersett Case.
In 1772 slavery was England's problem and Franklin boldly told them what they should do, up to a point. Franklin never addressed what to do with a milion freed slaves. It was not his problem. It was not a problem for the United States of America which did not then exist.
In 1787, when it was a problem for Franklin and the other Framers to deal with, Franklin and the other Framers voted to protect the African slave trade for twenty years. He voted for representation based on the slave population to be set at three-fifths of that population. FRanklin voted for every state in the union to faithfully observe the Fugitive Slave Clause. That is not what Franklin said; that is what Franklin did when he had to do something.
The Evil Empire was not there to make Franklin or the other Framers do anything.
The law passed in 1795 showed what Massachusetts did regarding the freed slaves. As was clearly stated, "By this law, it will be observed that all negroes, resident in Massachusetts, not citizens of some one of the States, were required to depart in two months, on penalty of being apprehended, whipped, and ordered to depart. The process and punishment could be renewed every two months." That was gradual emancipation in Massachusetts. Whip them and imprison them until they left the state. You are incapable of discussing that documented truth. Gradual emancipation was nothing more than ethnic cleansing.