I haven't read the thole thread (because i can't open it from my iPhone lol) but here is a quick update from me:
iPad 2 iOS 8.4.1: Safari works OK
iPad 2 iOS 9.3 (first official - haven't updated to latest yet): Safari works OK
iPad Air iOS 9.2.1: Safari works OK
iPad Air 2 iOS 9.2.1: Safari works OK
iPhone 6s iOS 9.2.1: Nothing works. When I open a link in Safari, the whole app freezes and I have to kill it. Google Chrome doesn't work either (doesn't freeze but links can't be clicked). Firefox is the same as Chrome.
iPad 2 iOS 8.4.1: Safari works OK
iPad 2 iOS 9.3 (first official - haven't updated to latest yet): Safari works OK
iPad Air iOS 9.2.1: Safari works OK
iPad Air 2 iOS 9.2.1: Safari works OK
iPhone 6s iOS 9.2.1: Nothing works. When I open a link in Safari, the whole app freezes and I have to kill it. Google Chrome doesn't work either (doesn't freeze but links can't be clicked). Firefox is the same as Chrome.