To me, this sounds more like a rote response than anything based on knowledge or experience.
Whenever you report a fault on consumer electronics, they always start by telling you to do a software update and factory reset, however much of a pain in the arse that causes (such as losing all your Wi-Fi passwords, settings, cache and so on).
I would love it to turn out that your car is now fine, and if it is, I will follow suit, but at the moment it just sounds like a local dealership shooting in the dark and wanting to say something rather than nothing.