Of course the they're saying that it's persicution! Which it may be... I mean I'm not a big fan of the whole Scientolgy scam/cult. But as far as hair brain religions go, is it really all that bad. I mean even with the whole spirits of alian race, and humanity being direct discendance of clams or whatever.
But than agian look at all the other world religions and ask yourself, aren't they just as insane? I mean let's imagine that the scientology infestructure where to collapse, they're religion still spans across continents. There will probably still be fringe groups who believe in dianetics or Xenu or whatever.