I think it does. There's a litany of information out now about how bad Facebook is - for everyone. The author is soliciting feedback, and to feature a Facebook icon as the social link on the demo doesn't take that into account. It's not a matter of liking it or not.
I don't think it does. And the mob of HN seems to agree with me (there's a scary thought). You also didn't answer why it's tone deaf. What tone do you think it strikes that is unwelcome? that's why your first comment is now dead. And why this responder asserts that it's not constructive to the discussion. You're asserting FB is bad, but not why. You don't make any claims, arguments, or suggestions you merely assert everyone should obviously be in agreement that the only reasonable response is to pretend FB doesn't exist, and/or has no value for sharing content. Because for what I'm left to assume is because it's "bad for everyone". I guess that's so obvious no one might disagree with you.