I think
@Richie and
@hughtrimble both have fair points. It's not mutually exclusive that it's important for the creation of the malt as location specific to be kept somewhat sacrosanct, but also that producers are certainly guilty of overplaying the role of location in some ways.
If you want some whisky of true provenance get yourself some Port Charlotte.
https://i.~ibb.co~/MTGR2yq/islay.jpg
Also check out this place, a distillery in Frome, Somerset. He mashes, ferments and distills on site, and also is experimenting with malting on site, particularly interesting was a video where he was producing a peated malt using a BBQ smoker in a sealed shed. All maturation on site also. 'Proper' English single malt by all means.
www.retributiondistilling.co.uk