Yes, this is true. I was merely stating that not all Highlands are the same, but there are sub-regions within the Highlands that need to be clarified. I was not clear in my statement. I was being brief. However, like it or not, a lot of people think Glenmorangie, Dalwhinnie, Glengoyne, and Dalmore when they say "Highland". I would never refer to the Island whiskies as "Highlands", if I did not use the conjunctive "Highland-Islands". It would cause too much confusion.
I have edited the post to read "Oban is not just a Highland", so as not to confuse.