And it wasn’t until 1691 that free blacks lost their voting rights. After the revolution while most northern states eliminated slavery, the southern states did loosen laws and improve pathways to freedom, only to go back and implement the slave codes a generation later.
See Sherrie Burr’s (Yes she’s a Black descendant of that Burr) book Complicated lives. American Slavery isn’t an Ancient Custom, it came into being by accretion and it was the expansion of slavery rather than the end of slavery that was the issue that propelled Lincoln to office.