Well, with those daily nags popping up on top of the screen (even blocking 2-factor ID authentication codes!), it's no wonder people's first instinctive response is to just push the damn "Download Now" button and get it over with it.
And if you think that's irritating, you should see what Apple does to Apple TV 3 users who have refused (imagine that!) to update to the latest TV OS (or whatever it's called) because the YouTube Channel "pause" is still broken. (Rumor has it that the just-released Update has fixed this, but considering the track record of Apple's updates to fix buggy software, I'm in no hurry.)
Just how aggressive has Apple become with these constant nags to update update update or else?! Well, it started out with the nags to opnly appear between shows on non-Apple channels (ie., Netflix, Amazon, YouTube). Then they started to appear if you had paused the video in Amazon for longer than 5 minutes. And then, the nag started appearing right in the middle of music or videos or even movies you were watching from your iTunes library on Apple TV 3!
And just 2 days ago, that nag showed up in the middle of a rented iTunes Store movie; it blocked the screen until you made your decision (yes! no! later!), while the audio continued.
Wow, they're so desperate to get you to update (but never telling you why it was absolutely necessary) that they will interrupt a rented iTunes movie!