I don't even know what geek bench is, but I do know that the Genius Bar telling someone to get a new phone when their was slowing down is a garbage way to do business. That happened to my brother, not long after this happened..it was the battery, and they didn't tell him that, or they didn't know. Either way, communication would have been the solution.
Why am I entitled? It's my phone, full stop, end of story. It's not theirs. As I stated earlier, this is like VW doing a ECU update to my vehicle slowing it down under certain conditions.. even if it's a good thing, I should know, and I should know why and specifically, when it's happening.
Apple knew this and that they would lose in court; that's why they quickly settled and Tim Cook personally apologized and said they would do better in the future. They know they chose poorly and handled it unethically. You don't degrade sometimes device, even necessarily, with telling them.