EFF labels MORMON "generic": could this challenge extend to SCIENTOLOGIST and other similar marks?

The Electronic Frontier Foundation has sent a letter to The Church of Jesus Christ of Latter-Day Saints that claims the term MORMON is “generic” due to it being the only way to describe people who follow or are part of that religious community. If one trademark of a religious organisation is being accused of genericism, other similar religious marks, such as SCIENTOLOGIST, could also be at risk.