I mean, iPhone's have a somewhat checkered history with their batteries failing. Which is one of the reasons why I'd always leave Bluetooth/WiFi off by default

I mean, iPhone's have a somewhat checkered history with their batteries failing. Which is one of the reasons why I'd always leave Bluetooth/WiFi off by default, and only turned them on when I actually need them: Cut way down on the battery draw. That option is now gone, instead the default has become "everything is always on", drawing on the battery, thus forcing you to recharge more often, cutting down on the lifespan of your battery. Not saying that was Apple's plan all along, but it's one of the outcomes of this pointless change. When the solution to this could be as simple as "double-tapping the icon will turn it off permanently, tapping once temporary".