Because security software that deletes your user settings is the only way to protect yourself!

A severe attack, Kaspersky argues, therefore has the potential to highlight the problems of a closed ecosystem and damage Apple permanently.

Right. Again, Mogull:

There is a long history of antivirus vendors claiming a platform can't be secure unless they have access to it. For example, Symantec and McAfee even took out a full page ad in the when Microsoft first announced they would lock down the 64-bit Windows kernel in Vista, breaking the kernel hacks they relied on. Personally, I'd prefer a secure platform [over] having to rely on a partially-effective solution that requires reducing the rest of the system's security.

The Macalope really didn't have an opinion of Kaspersky before its CEO decided to make a big deal about the fact that its virus software is useless on iOS because Apple has decided to make its mobile operating system incredibly secure. But he does now, and it's not a good one.