I agree that image is as fake as can be. I reported it. Nitpick though:
> None of the Hawaiian islands are close enough to each other to generally be visible from one another!
Of the Hawaiian islands usually identified as "major", Molokai, Lanai, and Kaho‘olawe are all visible from Maui, and vice versa.
Many people would probably limit the list of major islands to four. Interestingly there doesn't seem to be any official term for that grouping, other than perhaps the "main islands".
While I'm not seeing the "other island" in the background on the picture, I'll add that Maui is often visible from the northern shores of Hawaii specifically, on clear days.