Here we go ...

[brewer]

Not all brain "glitche"(s), including lack of empathy, are genetic.

There is a genetic picture to these cases ... in fact it was brought up in the vid. Granted, some problems seem to pop up from out of nowhere, but in the above case, it was in the family.

Don't you mean some cases? I didn't view the "above case". 

You might want to look at causes of sociopathy personality traits. Just because it recurs in a family does not necessarily mean its genetic.

Here is an example of potential causes: https://psychcentral.com/blog/caregivers...ciopathy#1