Getting junk mail and advertisements from companies I don’t do business with is annoying enough. But getting it from the companies which I have been a long-time and deeply invested customer is quite annoying.
What it really comes down to is respect. Companies that value you as a customer also tend to value your time and junk mail is always a waste of my time.
The easy way to tell how much a company respects and values you is to pay attention to how much crap they send you and how relevant the crap they send you really is. Apple is not exempt here as they send me “news”, but they make it painless to get off that list and don’t abuse the privilege.