I haven't followed the case in depth, but I'll say this...
I have no reason to believe this account from Cowboy is the accurate one when he's already given different variations and tried to capitalize on Nip's death himself. And I'm not even saying fam is a bad dude, I just think he's an opportunist and I have no reason to lock his word in as law...
As for the shooting itself, look. It's within the realm of possibility that shytty was on a high blackout, or that he was OD'd on envy, but generally speaking, if the exchange went the way Cowboy states it did here, dudes not coming back firing at you. Which would mean there could have been a prior history Cowboy wasn't privy to, as Nip and shytty knew each other for years. There are no concrete answers as to what happened because only Nip abd shytty would be able to tell you that...
Everything else is conjecture and while everything is on the table for guys who wanna speculate, it's all I'm the realm if possibility, generally speaking dudes not coming at you for say "I'm looking out for you, people got you labeled as a snitch"...