To be fair, there are only 2 units there, the main Edinburgh superchargers are a 5 minute drive from there and V3. Scotland really gets shafted with supercharger locations, the main locations in Edinburgh, Aberdeen and Glasgow are not in convenient locations at all. Perth, Inverness and Fort William on the other hand have decent locations.
All things considered we've not done to badly IMHO. Since I picked up my car (September 2019) there have been 5 new sites added to the previous 6 in Scotland ... so nearly doubled the count. Most appear to be on main routes. We could do with a few more, but look around the UK, ... we're not alone!