Regardless of where a set of ideas come from, if you disagree with them, argue against them head on and not with redirections to other topics.
these were wealthy men who owned other human beings for personal economic benefit.
whatever high-seeming notions may have underpinned their political project, their goal was to build a new nation in which they could continue to accumulate dynastic wealth free from monarchial control, at the cost of the very freedoms they claimed to stand for.
the hypocrisy is inextricable from the legacy.
I can take good ideas and leave bad ideas, the generations following the founders eventually did that by ending slavery.