Since none of these churches are in Rome, nor indicate any allegiance to it or to a pope, or devotion to the Eucharist or Mary - the 3 main things which basically unify R. Catholicism - and instead the 7 churches in Asia testify to a diversity that is quite contrary to Catholicism, and may have their candlestick removed, then they are of little to no worth to RCs whose primary directive is to promote the preeminence of the unScriptural church of Rome.
Good point!