The Feds and Prosecutors love taking pleads from mobsters and as part of their deal, the mobster is required to give an allocution admitting their involvement in organized crime. They love that. Doing that however violates their Omertà oath inasmuch that it's supposed to be a secret criminal society. Gotti was a stickler about that and would go ballistic if someone took a plea. His view was go to court even if they catch you with the smoking gun.
If you notice the Westside has for awhile been taken pleas as have other families aswell to get the lightest sentence and get back to working the streets. Why get hit with a max, just plea to the charges and move on.