Matt Taibbi seems to be stating that despite the possibility of these people being dangerous, they still come across as ridiculous. He highlights their "boundless self-pity", probably referring to a sense of victimhood and grievances that are not substantiated. He further describes their "outrageous sense of entitlement", suggesting that they expect their demands to be met without reason or merit. Finally, he points out their "slapstick incompetence as rebels and terrorists", implying that they lack the necessary skills and abilities to carry out their actions successfully. This could lead to the conclusion that despite any beliefs they have to the contrary, their behavior and actions are absurd, irresponsible, and ineffective.
Please elaborate as to why its ridiculous?