I only started noticing a turn once Angela Ahrendts was hired. She started focusing more on sales and instituted sales metrics. Training of the geniuses began focusing more on selling people stuff over training them on Apple's products and services. Before that, I didn't have any issues.
My first visit to an Apple store was before Ahrendts. I was there to see if they had any spare screws for a 17" PowerBook G4. This would have been early 2010 and my Mac was obsolete then. The genius that helped me was able to provide a couple of the screws I needed but couldn't provide all of them. He had helpful suggestions though and he spent some time with me.
That was the attitude I expected going forward - until Ahrendts happened.
O/T but I'm not necessarily inclined to agree with your overall opinion on Ahrendts, as there are other elements she introduced which, on balance, seem to have helped Apple prevail. But if the sales focus over product knowledge was instigated by her, that is disappointing.
Apple Stores do have a different vibe these days (even if averaging out the atypically 'bad' stores), but I'm never sure whether that's because Apple as a whole has a different vibe due to being a much larger company, or whether it's a result of shifting policies and tactics.
I'm hoping the story from the OP is an aberration.
One thing's for sure, I'm glad Apple quickly ejected
John Browett. Hiring him was an obvious mistake, and frankly inexplicable given his background. If he was still there, I think we'd have a truly hard-sell on services, insurance etc. and no free help at all.