While you are correct that the vast majority of public safety on the system is encrypted, it is misleading to say that the entire system is encrypted. The author of this post has previously made posts to figure out how to listen to People Mover - city buses - and those channels are not encrypted. Airport PD is still on 800 conventional. Medic-to-Hospital Channel is surprisingly mostly in the clear. It is slim pickings, but occasionally there is a thing or two to listen to.The Municipality of Anchorage has a 700MHz digital trunked system. It is entirely encrypted. You cannot listen to any public safety radio calls whatsoever in Anchorage. Even fire is encrypted. The State of Alaska has a statewide trunked system. Not all services are on it. State Troopers are encrypted. Some fire departments outside Anchorage are not encrypted. Pretty slim pickings over all.
Before Covid I traveled to Alaska several times a year. I don't even bother to take a scanner anymore. Ham radio yes. Lots of activity there.