No offense meant, H! But when your first post here is titled "The Ardbeg 17YO Con?", you do sound just a tad cynical. Not like wide-eyed innocent me!
Ardbeg's explanation seems reasonable to me, so I'm inclined to take it at face value. I'd say if you particularly like Ardbeg 17, yes, stock up. Favored expressions come and go, and even standard bottlings change over time, so I'd say enjoy what you have while you have it, don't expect anything to last forever, and have faith that something else interesting will come along even as others are lost. That's life.
Suspect your handle has something to do with water fluoridation, but I'm not sure I want to go there.