There's no privacy statement involved. It's an email. Emails get forwarded. It's polite to ask first.
So basically, the ends justify the means?
That's like suggesting that me giving away your credit card number is okay if you end up buying the product that the third party tries to sell you.
Yes to forwarding resume/cover letter email to others who might seek to hire the applicant. No to sharing others' credit card numbers. Human beings - creatures capable of judgment and discretion - don't need to reduce every decision to predefined deontological criteria.
Actually, I'm pretty sure history suggests that we do.
It's written right at the bottom of the original.