It depends on your definition of "power users", I suppose.
But they certainly don't want to shrink their network. The moment I meet a fellow like-minded geek and "add me on Facebook" isn't the default way to stay in touch, they're in trouble.
And I'm already at the point where I have to ask if they're on Facebook first, since many tech people have already jumped ship due to privacy concerns.
Why does Facebook care about specifically geek usage behaviors? Geeky types constitute a small fraction of the population, only a subset of that already small cohort has the concerns you're expressing here, and only a subset of those care enough to stop using their services. If Facebook can increase add revenues 10% by a change like this, they couldn't care less about losing the maybe 2% of users who will be genuinely put off from them by it.
But they certainly don't want to shrink their network. The moment I meet a fellow like-minded geek and "add me on Facebook" isn't the default way to stay in touch, they're in trouble.
And I'm already at the point where I have to ask if they're on Facebook first, since many tech people have already jumped ship due to privacy concerns.