That's because some moved onto a new branch called the Black Gangster Disciples.. The bloods and crips aren't mandated like a charter club or MC. 

They don't have a type of branch of rules except for some of the core basics. A lot of individuals always considered the gangs in Alaska to be more of the "wannabe" types as you put it, (again that's my thoughts on kids wanting or needing to belong to some particular group that gives them acceptance and recognition.) because they didn't fight or handle the streets in the same manor as the west coast originals.  

The same can be said of the hells angels that still reside in Alaska and the few who worked n owned the Bush Company.   Those weren't just normal bouncers I'm sorry to say & that's how that kid ended up dead across the street some years back.  A gang is nothing more than a group of individuals who pledge themselves to a type of service, for purposes of a sometimes unknown sort, to benefit all said members. Ex. LEOs