There are valid legal reasons to integrate with the address book. The argument that it's apple's fault is like saying WalMart is to blame for shoplifting because they don't put everything behind the counter. It would be very inconvenient to do so and overall things work better when we prosecute crime rather than create a police state environment where crime is not possible, while also making many reasonable actions difficult to do. I don't want to live in the Soviet Union and wait in line for bread.
> There are valid legal reasons to integrate with the address book.
Nobody is suggesting it should be impossible to integrate with contacts. The suggestion is it should be impossible to do so without asking my permission, as is the case with other private data. Requiring that apps ask approval before accessing my private data is not at all like waiting in line for bread in the USSR.
> The argument that it's apple's fault
Is one that nobody is making, so you don't need to debunk it. Or at the very least, I'm not making it, in fact, I very explicitly stated I wasn't making that argument in the post you replied to.
