The Assyrian attacks on Israel (the northern kingdom) led to an influx of refugees into Judah, which would have increased social stresses, while at the same time the authorities in Jerusalem had to invest huge amounts in tribute and defense.
When the Assyrians attacked Judah in 701 they did so via the Philistine coast and the Shephelah, the border region which included Micah's village of Moresheth, as well as Lachish, Judah's second largest city.
The Bible does not even hint at such a possibility.
However, neither does the Bible mention hermaphroditism (a condition in which a person has both male and female sexual organs), which undeniably occurs (although extremely rarely).
It is scientifically proven than some psychopaths/sociopaths have brains with severely weakened impulse-control mechanisms.