There are no sales metrics at the Genius Bar. They may give you options which include buying a new device but there is nothing they are graded on in regards to sales numbers.
As I am not in that world I can't argue the point. Just repeating what I've been told. However, here's a personal experience anecdote that leads me to believe sales metrics are true.
In August of 2023 I tried to get a battery replaced on a 6 Plus I got off eBay. I went to Best Buy because I didn't want to deal with Apple. Best Buy told me that Apple would not allow them to replace the battery and that their system was telling them to send me to Apple.
So, I made an appointment and went. Now, the phone had a tendency to shut off under use when on battery, but not when on charger. When I got there I told the genius the phone needed a new battery. I got the usual questions about backing up, etc. I told him that this phone was in no way a daily use phone and had no personal data on it. So, he tells me that they'd have to order the battery from their depot.
Which means they have one right?
And this is where things go south. He tells me that my problem of the phone dying is probably a logicboard issue. I tell him, the phone does not die on charger. So now he's annoyed and runs some diags. Then he tells me he can't replace the battery.
Remember, this is right after he's told me he had a battery!
Aside from the fact that I challenged him on his assessment there is nothing to sell me and he isn't going to make anything off the battery. It's a busy store and lots of other people with appointments. He can afford to see me walk out - which I did.
This is only one story, I've had others. One genius tried to sell me on an iPad Pro because it could be hooked up to a mouse and keyboard or something. I told him my Mac at home has eight displays attached. There was no further discussion of an iPad.
You say there are no metrics and I can't disprove you. I don't believe that though. But I'm wrong all the time so I'll give you that.
PS.
There is no genius bar. That was removed with Ahrendts. It's tables and the genius brings you over to one of the tables. The bar is gone, has been long gone and isn't coming back.