I definitely don't see why you'd interpret Rock saying "he's never leaving again" to mean... whatever the heck TheRock1525 is saying it means, without going meta and saying to yourself "well Rock is doing a movie right now so he's obviously being metaphorical or something." Which to me is sorta like taking John Cena kissing Eve to be meaningless in kayfabe because he has a wife, and thusly say "hey Zack shouldn't be mad at Cena because Cena obviously has a wife so he clearly wasn't out to betray him" or to say "Jericho isn't actually a dick look at him on Dancing With The Stars." Rock seems like an exception there for the way people typically think, for whatever reason.
If you take the words as actually meaning something close to what they mean on paper though it's pretty damn hard to take Rock's current level of activity to mean anything near "I'm never leaving again."
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No problem!
This is a cute and pop genocide of love!