aha I appreciate the rant, and you obviously know what you are talking about.
I have used the Lean 4 approach and I wasn't proposing it solves the problem, but it has reduced the search space for me in certain circumstances. At best it's a nice way for agents to keep in their context windows potential relations, I made it create enormous amounts of hypothetical nodes and then visualized it so I could talk with my relatives about potential paths.
As a side note, I believe, if we had a better DNA site that had great API access (and exposed genomes), I think agents could probably solve genealogy, even as far as complex endogamics.
(I don't think centimorgans is that useful past 4 generations kind of thing)