The only thing I do not like is downloading without my knowledge. I have nothing against updates and I do not wish to "block" them and I do not get messages (and I have no idea where you got that impression); however, I prefer to wait a day or two until after the dust settles so to speak to hear if anyone is having a problem with it or not. And, more importantly, I do not like having it downloaded without my knowledge which is what it has done. If/when there is a "1" showing, it will then show me in Settings that it has downloaded the update and do I want to install it now. I simply want it to ask me or wait for me to download. I don't like any device downloading anything without my knowledge or expressly having said "yes". I also prefer doing it through iTunes rather than wirelessly as the connection works better wired. I don't care about the little "1" showing on the icon. I've never said that I wanted to roll back on iOS; as for Mac OS, I know how to do that and that is why I maintain external partitions with bootable, factory fresh clones of several OS versions. For one thing, they will easily allow me to revert to a factory fresh state if I want to sell/donate, but the more important thing is: I can boot into them and run some older software which is no longer working in the newer versions. And that is one of the reasons why I have started to only buy refurbs from certain years to make sure they can run which version I want it to run.
FWIW, everything I've said only applies to automatic and unannounced downloads of iOS updates - any apps just happily wait until I update them.