The quotes are fake.
Musk is talking about suicidal empathy. Being empathetic towards perpetrators is not the right way to be empathetic.
The quote “The death of human empathy is one of the earliest and most telling signs of a culture about to fall into barbarism" is not from Arendt. On the contrary: Arendt argued that evil arises from a failure to think (the "banality of evil"), not a lack of empathy.
