I haven't seen this UI, so I'm commenting out of ignorance for Facebook's particular revisions, but anything that requires the user to take an action before seeing the options is going to severely limit the number of users that take the options. In fact, many will never see those options.

Click-to-reveal and hover-to-reveal require manual dexterity, a curiosity to see what's behind a link, and time to discover and parse the new visual information. Making these cognitive demands, particularly on sites where users relax, is going to reduce engagement.