I know you addressed your post to jrc* but I would like to respond.
My iPhone and my wife's both developed Wi-Fi issues after updating to iOS 8. Our phones did not have any problems prior to iOS 8, both worked well on 7 and no new Apps were installed. Our phones are set to update Apps automatically and they are up-to-date. Our other devices (non Apple) have continued to work perfectly on our network and ISP. On account of our difficulties I spent the better part of two days with AppleCare Senior Level 2. The tech "remoted in" through my PC into my iPhone and evaluated my Wi-Fi configurations. We changed all kinds of settings, forget network, reset network settings, tried different APs, DNSs, different bands, different channels, etc., etc., all to no avail. At AppleCare's request I reset my iPhone to New iPhone status (Reset All Content and Settings) with no Apps installed, same problem. At their request I went to Starbucks and tested there with their Wi-Fi, same problem. At their request I went to my neighbor's (different ISP and AP), same problem. My iPhone was then replaced with a brand new one at the Apple Store (courtesy of Apple, I do grant that they have good customer support, at least at Level 2). Came home with new iPhone and iOS 7.1.2, tested and all ok, then upgraded to iOS 8.1.2 and immediately got Wi-Fi problems again with no Apps installed. I could have and should have left the new iPhone on iOS 7 but could not have restored my Apps from the backup I had since it was from iOS 8, I would have had to install all Apps from scratch likely taking me days of work to customize all (in hindsight this would have been preferable). I got with AppleCare Senior Level 2 again, same rep (I have his direct phone number), he "remoted in" to my new iPhone one more time and after confirming that all settings were as they should he referred my case to the Engineering/Development team who according to the Level 2 rep is “swamped”, his word. The AppleCare Level 2 tech had already seen other cases like mine and expects that a new update to either 8.1.3 or 8.2, whichever comes first, will solve the problem. Let's hope so.
Apple released iOS 8.0 on September 17, 2014 and it contained many bugs. On September 24 it released 8.0.1 ostensibly to resolve some of the bugs but only to cripple iPhone 6 and iPhone 6 Plus Touch ID features and cellular connectivity. The update was released at 9:00 AM PST, and approximately at 11:00 AM PST, Apple removed the update due to these problems as well as other issues. iOS 8 has been plagued with problems from the start and these problems continue to date. You might want to take a look at this article, one of many outlining the difficulties Apple customers are having:
http://www.forbes.com/sites/gordonkelly/2014/12/09/apple-releases-ios-8-1-2/
I don't want to get into a tug of war with you but frankly you don't know what you are talking about. I think if there is any ignorance on this forum it is on your part. And by the way, I am a Software Engineer with a Ph.D. from Rice University and yes I expect that when I buy a piece of technology that it will work, especially after the bugs have been well reported for over three months.
Have a good day...