Correct me if I'm wrong, but didn't Jesus spend a fair amount of time and energy trying to get the existing Jewish hierarchy to recognize that they were wrongly focused on their robes, the best seats in the Temple/Synagogue, etc., (what I would call expected human behavior in any human generated hierarchy) and thusly not doing the Lord's work? (my paraphrasing).
I guess I don't understand why the apparent effort of some, to trace lineage back through humans takes precedence over a relationship with Jesus.
Considering that humans are just as fallible now as they were then, is it possible that perhaps the same human mistake the Jewish leadership was making back then was replicated by some under Jesus's New Testament gospel?
For humans, tracking lineage, historical investigations, etc., can be heady stuff, but it doesn't seem to me that this would be what Jesus would wish us to focus on to save our souls and follow his plan for us.
(Using your post as a jump off point to ask these questions.)
Christ railed against the Scribes and Pharisees for putting themselves and their doctrines and traditions above God. (Matthew 23)
To God be the glory!