"nothing to see here"
Oh, so I guess 8.0.1 is never coming out.
I don't think you get it. This isn't news because every dot-0 release has these same complaints and there is always a .01 to solve it. The battery issues are typically the app updates coming fast and furious and chewing through your battery while the Wifi issues are invariably incompatibility with routers untested by Apple (same thing with every new HTC, Samsung, Motorola and Sony device with regards to Wifi)
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I bought an iPad mini. It had defective WiFi. I took it back to Apple for diagnostics. Before the tech came out a One to One instructor pulled me over to the side and said it was my router, not the device. I'm using AE. She told me I have to update to the then new ac standard. She was not willing to consider that all other devices were working properly on the AE, even the cheap Acer netbook. Remember netbooks (TC). She hung tough trying to hard sell that router.
The tech ran diagnostics. The iPad mini had connectivity issues. I got another one. WiFi is better but not much and definitely not as good as that cheap Acer netbook or my old iBook.
Apple quality is suffering. There is no sensible reason for people to make up issues on the devices.
Your one device had a faulty wifi antenna or chip and Apple's quality is suffering. Got it. Can you do me a favor and monitor the tech forums across the web whenever a new device is released? It's the same story every time: "wifi issues, but a software patch is coming".
There are a plethora of routers out there and they all do things a bit differently in how they implement the "standard". Invariably the device makers do not anticipate every single router. Such is life. But you thinking your one unit is indicative of a trend is the very definition of anecdotal evidence.