Not trying to defend Casso,'cause he is a Machiavellian,sociopathic scumbag,but from a Cosa Nostra point of view,I always felt he was at least partly justified in his actions regarding the Jersey Crew.
Casso was the boss(well,underboss,but it was a power behind the throne situation),the rules were always that whatever the boss says,that's the way it is.The Jersey Crew were making millions,maybe tens of millions,and what they were kicking up(50 thousand a year) was,to put it simply,an insult.They should have expected it.
Also,him trying to "whack Jersey" was always a bit overstated.I may be wrong,but I always believed that he mainly tried to kill the Accetturos and a couple of other people,not the entire Jersey crew,which had 40 made guys and probably hundreds of associates
I've said similar before. Guys like D'Arco and Ricciardi always overstate Casso and Amuso's psychopathy to justify their own flakiness. D'Arco turned his own children into junkies and blamed it on his bosses. And Ricciardi wasn't the saint that Manhattan Mob Rampage would have you believe - look at Seton Hall and the golf club beating on Craparotta.
They were all as bad as each other.
Chiodo was the only high profile guy who ratted with any justification.
