The alleged problem is not in access to source code of the app or library, but is in users inability to recombine modified LGPL piece with the app itself to pro

The alleged problem is not in access to source code of the app or library, but is in users inability to recombine modified LGPL piece with the app itself to produce new work. A user who wants to modify the LGPL piece of an app would have to pay the dues to Apple to make use of thusly modified app, and this is deemed to violate the "no fees imposed" clause.