This seems a bit trashy and tone deaf. Apple does have plenty of problems, and shouldn't be as rich as it is, but that doesn't justify ignoring the legitimate complaints that lead to apple's work to hide email addresses and personal information from vendors.
I might want to use app Foo, I might even want to have an account on app Foo for syncing purposes, but that doesn't mean I want marketing emails, and spam, and all sorts of other crap from the makers of app Foo.
Or, just as often, anyone that has picked up my address from lists originally obtained via a hack of some sort because one of those entities has had lax security.
I might want to use app Foo, I might even want to have an account on app Foo for syncing purposes, but that doesn't mean I want marketing emails, and spam, and all sorts of other crap from the makers of app Foo.