To be clear, the post is focusing on those that are mentally ill/addicts/aggressive. The ones that stink up the car, lay on the seats or use the car as storage for their items, treat the car as their bathroom, harrass riders, etc. Even if these people pay (which I doubt they do), their actions disrupt riders and the system as a whole and they should be removed.
The problem is quickly getting out of hand.
On the other hand, someone who is sleeping, sitting up unnoticed, paid the fare, and arent disturbing riders can be left alone.