Well, no one knew it at the time, but Safari was horrifically unfit for purpose as a web browser for over a year (goto fail).
Or we could talk about the random reboots (worse than any of the many Android devices or Windows PCs I've used in the last several years) and other serious bugs that plagued iOS 7 (not all of which have been fixed). For instance, this music syncing bug:
https://discussions.apple.com/thread/5324398?start=0&tstart=...
which, if you are unlucky enough to encounter it, can render a previously-working iPod almost completely unfit for purpose. When my wife's iPod got trapped in this issue the only reason we didn't get rid of it is that we also kept our music at Amazon, so she was able to successfully switch to Amazon Cloud Player. Or we could talk about the stubborn persistence of Wi-Fi gremlins with some device/OS combinations or ...
Apple may have a better batting average than most, but they have their share of strikeouts as well.