I was up in Squirrel Cove last spring and didn't notice any... I didn't make the circuit but perhaps they have been removed now? The only place along the Inside Passage I ever felt negatively affected by a floating home was in Port Harvey, I believe... otherwise, what I saw was either unobtrusive or were clearly working dorms which were presumably temporary.
I have mixed feelings on the subject. On the one hand, no one likes run-down derelicts or permanent floating boxes taking over favorite anchorages. On the other hand, there are people who object to us
anchoring where we please, even temporarily. From what I read here the problem is more prevalent on the East Coast, and I am thankful for that. It strikes me that trying to involve the authorities and enforce our preferred use of the water in this matter may be a bit short-sighted... John, you started the other thread, about the RCMP boardings of boats at anchor, didn't you? While the distinction you are making here may seem clear enough to us, to enforcement agencies it seems like it would simply lead to open season on anything afloat... a mess of new regulations, definitions, and misunderstandings sure to follow.
It's in the nature of beautiful and serene places to attract more population and civilization than they can hold without becoming less serene and beautiful. I've never seen a legislative effort to preserve them that resulted in everyone being happy with the outcome. I don't know that there is a solution for it, except to go further afield.
On the other hand, there may be less regulatory ways to discourage this, or to adapt to it... have you tried simply tying up to them instead of trying to find a spot to anchor? Get nice and cozy and explain why... you'll either make new friends or discourage permanent occupancy.