Any unboxing experience. I mean, naively this means that the doodad you just bought (like the IoT Sous-vide heater I got for Christmas) requires you to fumble with your settings to turn BT back on before you can pair it.

Now, sure, I'm sure the response of the people here is "But I turned it off because I want to have to use settings to turn it back on." And that's fine. But that's not the use case for most users, I strongly suspect. Having a phone that just works with crazy kitchen gadgets is something of real value.