Sorry about the two year delay ......
I recently bought the latest 'Orb' shaped Alexa Echo Dot, and if you ask it "Is the Isle of Man part of the United Kingdom" it/she replies "Yes, the Isle of Man is part of the United Kingdom".
I have been in touch with Amazon, but after several emails and a phone call I've given up on trying to convey the fact that it's not part of the UK.
I think they want €5 or something to send an email stating my query, but I refuse to spend money trying to correct an error (by them) :-)