The condition of being descendants of slaves, or people who faced other forms of official discrimination cited in the prevention of intergenerational wealth such as redlining, blockbusting or unfavorable treatment in the GI bill, etc., is ultimately an individual situation for each individual affected.
The idea that you can dismiss that as not an individual hardship -- though it kind of is for those impacted -- strikes me as pretty much a word game, nothing more. Not unlike the word games American laws started to use when they could no longer punish people de jure for their race.
It's a lot easier to quantify and equalize the situation here and now rather than to try to make up for a future that could have been, and for which no living being is responsible. The past is complex and blurry, and families aren't a straight line. And generally, people aren't bound by their ancestor's misdeeds.
Poor people should get more help from society in the US, that's a fact: race might be a strong predictor for poverty, but the best signal for poverty remains income and wealth, right here and right now.
Why bother looking at anything else? Are poor whites or asians somehow more blameable for their poverty than poor blacks? Should a successful black person get reparations from a white hobo, simply based on their lineage (that none of them have control on)?
These are sticky questions, but if you're serious about reparations being law then you should be prepared to give some straight-forward answers without deflection.