I saw you debate this with someone else, and my recollection is that you were stomped.
Might have been rustbucket or wardaddy, or central_va, or Pelham, or Jeffersondem but I don't remember exactly who it was.
The lumping it in with the promotion of Indian attacks argues that "domestic" refers to slaves.
The word "Domestic" derives from "domus" which means "house." Shares roots with Dominate, Dominion and Domesticate.
“domestic insurrections” likely refers to all of the various factions that the Royal government was stirring up against the colonial rebels, not just one. This would have included the slaves responding the Dunmore’s, Mohawk and Seneca Indians being recruited by Loyalists up in New York, and Loyalist militias throughout the colonies.
PBS published some information about how Lord Dunmore's Proclamation resulted in actions by blacks against American patriots. See: PBS link: Africans in America, Revolutionary War, I excerpt the following:
The Governor of Virginia, whose royal title was Lord Dunmore, on the other hand, sought to disrupt the American cause by promising freedom to any slaves owned by Patriot masters who would join the Loyalist forces. (Runaway slaves belonging to Loyalists were returned to their masters.) Dunmore officially issued his proclamation in November, 1775, and within a month 300 black men had joined his Ethiopian regiment. Probably no more than 800 eventually succeeded in joining Dunmore’s regiment, but his proclamation inspired thousands of runaways to follow behind the British throughout the war.
…
Colonel Tye was perhaps the best-known of the Loyalist black soldiers. As an escaped bondman born in Monmouth County, New Jersey, he wreaked havoc for several years with his guerilla Black Brigade in New York and New Jersey. At one time he commanded 800 men. For most of 1779 and 1780, Tye and his men terrorized his home county – stealing cattle, freeing slaves, and capturing Patriots at will. On September 1, 1780, during the capture of a Patriot captain, Tye was shot through the wrist, and he later died from a fatal infection.
Sounds like “domestic insurrections” to me.