In what way is this libel, exactly? Can you detail support for your position?

IANAL, but I seem to recall that, in order for something to be libel, the party providing the misinformation has to reasonably believe that the information is incorrect; having a reasonable belief that what one is saying is true isn't libel. iOS shows a message saying an app without location permission is accessing permission, someone reports that thing happened, it's not libel.

Not only that. This is about a Brazilian app that only works in Brazil. There are similar concepts in Brazilian law but it certainly doesn't use whatever way US define libel.