Presenting a screen/dialog to the user at first login asking for permission to access contact data does not sound like "forcefully harvested". Users rarely understand the consequences of their decision, which is why I would love to see iOS and Android eliminate the option of wholesale contact access, but use of Facebook apps is not predicated upon receiving your contact data.
If someone signs a bad contract because they refuse to read and understand it, and just signs it anyways, they're still generally bound by the terms of the contract. iOS and Android both have pretty clear descriptions in their permissions dialog of what the app is asking for.
