Well, actually I sort of think that all of us using *any* of the HA technologies are early adopters. (Possibly the super duper expensive stuff doesn't qualify for this - dunno.)
But as I read through Cocoon, SH, and other HA forums, I read about a lot of hobbyists who, like myself, worry about the WAF because none of the technologies are rock-solid.
I see folks self-programming their sprinkler controllers because there isn't a way to integrate great smart controllers like SmartLine with HA.
I see folks experimenting with super expensive light bulbs, and trying to make CFs work with their HA dimmers - because the technologies haven't quite meshed yet.
I see folks going into this - like myself - looking for ways to integrate lighting, climate control, survellience, irritation, and security - to make a "smart house" - but having to cobble things together no matter what technologies they use.
So I don't see Insteon as early adopter technology; I see the whole HA family of technologies as appropriate only for early adopters.
I'll feel that we are out of the early adopter stage when my wife would feel comfortable managing our HA-enabled house if I die; if my wife, in fact, would see a new HA-enabled house as a convenience rather than a time- and money-sink; if she didn't see this as an expensive hobby of mine; and if the term WAF disappeared from our dialogs.
I love it, but the whole enterprise is for early adopters.
Just my opinion. YMMV