Shalom all,
as the Curator nominally "in charge" of the "Biblical Tree" on Geni, I'll throw in my opinion.
1. The Number #1 priority of ours is keeping this tree as consistent as possible to the sources. The timeline of the Jewish Bible ends around 2500 years ago, with Zerubbabel 3rd Exilarch / זרובבל. The Christian Bible ends around 2000 years ago.
2. Past that point there are NO LINES that connect this ancient tree with present times. NONE. There are dozens of lines that CLAIM to make this connection, but none of them are nearly complete enough or otherwise based in reality. These "lines" include all sorts of connections to European nobility and such, and from there to modern times. There are also some Jewish lines. All of these lines tend to be AT LEAST 20-30 generations too short.
3. Despite that, these lines are EXTREMELY popular, and new users keep on adding them, and much of the Bible tree itself. So it's a full time job, just tracking down these lines and cutting them. Again and again. So yes, it's extremely frustrating.
For more details read the project description.
https://www.geni.com/projects/Biblical-Tree/38