If you want to disagree with the founders, then by all means, tell us they had no right to independence from the United Kingdom for the simple reason that they were all slave states.
Did the slave owning Founders have a right to independence?
The Revolutionary War was not about slavery. I don’t believe slavery was even mentioned in the Declaration of Independence. We did not fight the British for our freedom for the purpose of maintaining slavery. The mere fact that we had slaves in did not in any way mean that we couldn’t fight for our freedom. The thought that one bad thing offsets all the good things is, on its face, ridiculous.
By the way, the comment about all the states being slave states, while technically true, is too cute by half. According to the 1790 census, both Vermont and Massachusetts had ZERO slaves, and New Hampshire had 151. Calling them slaves states is a little bit of a stretch.
The secession of the Southern states, on the other hand was about three things: maintaining slavery in the existing slave states, expanding slavery in the territories, and enforcing the fugitive slave act. If you think it was about any other thing, please point me to the part of the Articles of Secession from the states specifically mentioning those other things.
One of the tests I use when considering various theories about why the South seceded is the child’s game of 20 Questions. Take any claim regarding why the South seceded (The north invaded! We just want to be left alone!, etc., etc, etc) and play 20 questions, and see how many questions it takes to get to slavery. Betcha you don’t make it to double digits (if you’re honest).