"There is no need to proffer any such argument because your premise is based on sophistry not reality."
Which premise would that be? You appear to be arguing against a straw man here.
"Human beings are human beings, they are not property. For the sake of compromise as you note, the Founders INVENTED A FALLACY that does not exist in reality. If I can own you, end your life on a whim and face no legal sanction whatsoever for doing so, you are not a human being, you are my defacto property. If I can take your life, you have no liberty."
The founders did not invent slavery. It existed prior to the founding of the United States. If you're referring to the 3/5ths thing, it was never meant by either side as a statement that individual slaves were worth 3/5ths of a person. It was just an accounting thing taken into account when determining proportionate representation for states based on their respective populations.
"Human beings with no legal rights to independent life itself are not human beings under such a construct, they are the factual equivalent of property since they are owned by other human beings who claim a separate, full legal status not given to slaves. What immoral people want to claim to ameliorate their own inhumanity is irrelevant."
We have no disagreement about the immorality of slavery. But the dilemma still seems to be lost on you. If the Abolitionists had not counted slaves at all, then the pro-slavery groups would have used that as political fodder to say "aha, see they acknowledge and endorse our construct that slaves are property, because for them it's either/or!"
"There is zero wrong with proportional representation in the House and everything wrong with humans owning other humans, then using their indentured existence within artificially constructed boundaries to codify even more political power while denying them all human and legal rights in the process."
I completely agree with this statement. And since we've established that the latter has zero relevance to proportional representation in Congress today, that logically implies it also has zero relevance to the electoral college.