There is a indeed a heated response to it. Not sure if I can be called "rabid Apple cult", but I can definitely be called long-term user (1990 onwards).
The guy is right. The quality at the moment is noticeably poor, and rather than being pleased at new updates I now regard them with suspicion. Concrete examples exist both on the Mac and on iOS - wiping out a phone's ability to make phone calls, for instance (8.0.1, iPhone 6), is somewhat of a faux pas. On the Mac side I get daft things such as
this, which slowed my 2011 iMac to a crawl until I invoked an obscure command to sort it. I get silly synchronising problems with iTunes, both the dreaded "waiting for changes to be applied" hangs and also things like "there was a problem copying these items, see iTunes for details". iTunes, of course, never has any details about it.
Then there's functional quality. The whole OS is increasingly feeling like a Zelda game, memorising which magic multitouch incantation to invoke next to do something wonderful. They also trash things - Expose now
looks neater, but is far less functional as it no longer exposes ever window but does this pretty-yet-useless grouping thing. They confuse things - I have no idea what my workflow for photos is anymore, is my photo just on the phone, shared in iCloud, just on iPhoto, where does it go if I edit it, how do I delete a shared photo from just one device without taking it all out of the others - that kind of thing.
Then there's online - the Apple ID situation is farcical. Users: "give us a way to merge Apple IDs please". Apple: "here's Home Sharing! A totally new way of sharing things that's not at all confusing". Users: "err...no. Give us a way to merge Apple IDs please". Apple: "here's Family Sharing! A brilliant new way of letting multiple ids get access to the same content, possibly, but only allowing one credit card to pay for it! Give
your 13 year old access to the family credit card today!". Users: "Sigh. Give us a way to merge Apple IDs please". I await with wonder what other non-solution is going to be offered to me in the coming years.
I agree with the premise entirely. I think Apple's software quality has dropped, and dropped significantly. Bugs, functionality, usability...it's all there, and it's all worse than it used to be.
Cheers,
Ian