Really silly question - but can't they correct for this without the GCJ-02 by just correlating the mutual of the map information with the satellite information? It seems like if you can have all the information provided to you, just randomly warped by some deliberate obfuscation you could 'trivially' (aka primitively) correct for it by using the available data of the satellite and the maps by feature matching and non-rigid registration?

edit: updated silly question after reading more on this