Here's my take. Fish and game movements rarely follow boundaries; if the tribe wants to manage area game--and enforcement is a key component of management--then they're going to have to patrol outside of the rez. The article says they'll patrol within the Suiattle, Sauk, and Stilly drainages, as well as Puget Sound, which sounds to me as though it would include more non-tribal land than tribal.
If this is the case, who cares who hires these enforcement officers or who they work for? You can look at it as an unfair entitlement, or you can look at it as the Feds funding any other program that may or may not do the public at large any good. And more enforcement in the managing of our exploitable natural resources is a very good thing, particularly with trends during the last decade of budgetary slash and crash at public agencies.
The north Puget Sound area where all this is supposed to occur is adjacent to some of the most populated areas in the state, and has some of the most productive habitat in the area. Sounds like good poachin country to me. Hopefully the new tribal officers can cooperate with WDFW officers and allow the WDFW folks to increase their presence in other hotspot areas.
The glass can be viewed as half full here. Really rather be here than in California where the economy is blown and a movie star just took office.