> because they could make this so annoying to do that nobody would try (for example, stripping symbols).
Many of Apple's OS frameworks are managed code (ObjC/Swift); and in ObjC, calling across a library boundary is always done with a message-send — i.e. a dynamic-dispatch, necessarily symbol-table-based call into an entrypoint of the target library. So anything Apple did to "strip symbols" would make it impossible for them to have one of their libraries call into another of their libraries.
Many of Apple's OS frameworks are managed code (ObjC/Swift); and in ObjC, calling across a library boundary is always done with a message-send — i.e. a dynamic-dispatch, necessarily symbol-table-based call into an entrypoint of the target library. So anything Apple did to "strip symbols" would make it impossible for them to have one of their libraries call into another of their libraries.