Not sure why then - it had the tracking done regularly but was slightly lowered from standard - never any stability issues. I was pumping 280 odd BHP through the front wheels though!
The fact is the most common cause of wear on the inside edge of the front tyres of a car is toe-out, not camber... unless you do some fairly extreme driving e.g. lots of time spent cornering hard - lots of track days on a tight and twisty track.
My first Integra Type-R used to root the front tyres in about 7k miles... I had a full four corner geo done and it was there was excessive toe-out. This was reset to a small amount of toe-in and suddenly the fronts lasted over 12k miles... and the car was transformed... Even with quite a bit of camber (within the spec) on my 911, the front tyres wear evenly because it is set with a little toe-in.
I don't know what the tracking parameters of the Golf are, but they could well be 0 + or - a small amount. The thing is if they are set parallel then under load they're like to run with a bit of toe-out owing to the flex in the suspension.
For me, I'd be asking them to set the tracking to allow for a little toe-in if the spec allows.
The amount of power shouldn't make a difference to the evenness of tyre wear... just the amount

unless of course, there's so much that when you use the power it distorts the suspension...