Think of this color choice this way:
It creates this conversation; which is great marketing - it's not too negative either.
It creates distinction; which is great - people will get this color because it's the only way to show people you have the 'newest', which isn't a negative either.
It creates desire for me; which is great - future options for more colors, introduce "product red" for those who want the 'male' design and still something new. And there's a reason for the iPhone 7 to stand out. Worst case scenario, it sells more Apple Cases, I guess, which isn't a negative either.
It creates a statement: Fashion; which is what the Apple Watch introduced, well, actually the iPhone 5C introduced that I guess. That the device is 'personal', and that having the iPhone is a fashion statement, which isn't a negative either.
All good reasons to introduce a 'pink' phone, that in my opinion guys can still buy. I am considering it; and not insecure about myself to ignore it. But my reason to doubt about it is that' it looks more 'pink' than 'gold', and that it looks like it is a weathered color, rather than a natural true gold color. But that's just me.