we go as for back as needed to achieve a somewhat just society.

Let's take your example of the Jews in Egypt (other than the fact that the source for Jewish slavery in Egypt is just religious texts without any archeological evidence ever found): is there some great opportunity divide between an Egyptian and an Israeli? no, so we obviously don't need to worry about that.

or for the Ottoman-Slavic question: do Slavic peoples have less opportunity than those of modern day Turkey? no, so we don't need to worry about that.

and yes, Italians (and many other parts of Europe) do send different types of aid to Africa for these reasons

Do Black people in the USA have massive opportunity differences in comparison to the WASP population? yes, they do, thus it is right to conduct these reparations. You may not be the only people to have committed slavery, but you sure still wear it proudly, and you are still a deeply systemically racist nation.

TLDR: it's not about revenge, but righting wrongs.

Even currently in some rich Middle East countries, there are technically slave workers - construction & household to name 2.

This isn't a slippery slope fallacy. Nobody's saying "if we let the gays marry the next thing that will happen is people will want to marry animals!"

What people are saying is, okay if this is being done in the interest of fairness, who else needs considered, and is it practical to consider them? Are we ever actually going to be able to achieve something close to fair?

In the US a great example in this discussion is native Americans. Do they get more or less for having their entire society destroyed, land confiscated, being driven on death marches to far away land, repeated treaty violations, decimated by smallpox, and many of the other tournaments?

I have native American, German, and Scottish ancestors that never owned a slave. I don't have "African", Irish, or "Asian" ancestors.

Do I get a check, do I get excluded, or do I pay for the sins of someone else's forefathers? And then because... despite all the struggles my ancestors endured themselves, I lived in a country that's trying to reconcile past sins of slavery they had nothing to do with directly (and hopefully were opposed to)?

Fact of the matter is, native americans suffered horribly, they just don't exist in any kind of numbers to make a stink about it, and many of them bred into the white population.

We're never going to get to "even" and we seriously need to consider if more unfair government wealth distribution is the solution to previous unfair government wealth distribution.

Hell I'm a full on Democrat and I strongly believe this will only make race relations worse. Like by a factor of 100 if they did that here. Two wrongs don't make a right, and there's no way sufficient time money and resources will be spent to actually make anything resembling fair happen here or in the US; you can't do that when you're trying to score political points.

Governments should be trying to help people from where they are now, not trying to reverse history and retroactively remedy history spread across hundreds of years.

This is just communism. Distribute wealth until everyone is equal. You don't even need to bring race into the equation to achieve the same results as being proposed here.