>I don't know what to think about it.
This is why Q keeps telling us to expand our thinking. You really have no idea what could prompt these comments?
The most obvious explanation is that this is the best excuse he could come up with to explain the exodus.
A deeper reading is that he is trying to keep the popular uprising against the ruling class tamped down; make people feel that they are akin to assassins if they consider challenging the power of the ruling class.