As it seems, reparations were demanded (and payed) sometimes, cp. e.g. https://www.jewishvirtuallibrary.org/german-holocaust-repara...
(Emphasis mine)
I think this final paragraph in that article says it all. Who are the reparations going to? The Holocaust survivors. I'm not aware of any Haitians that were wronged by France in the 1800s that are still alive today, but if any of them are still alive that makes it much easier to figure out how to pay reparations :)
My general point was that it's ridiculous to pay reparations of wrongdoing to people that weren't wronged. And you can go down the whole path of how certain people are born into higher social statuses and whatnot, but that's a different argument and that ultimately boils down to the fact that life isn't fair or equal. There's nothing we can do about that.
What we can do is fight the crimes against humanity that are happening right now. We can make life better for the people around us. We can help influence our small circle of impact, and hopefully make the world a better place in the process. Focusing on the evils of our ancestors won't get us anywhere (unless we're studying them to avoid making the same mistakes). But maybe we can fight the crimes that are going on right now so that our posterity won't have the same arguments about how we wronged them by not fighting the injustice that is now.