I can't aruge with that, but I just think these guys are a joke, not to be taken seriously.
You'll probably find more of these guys at a trekkie convention then you will at anything violent.
Its rather difficult for me to see some of these guys doing anything, considering that the highest levels of this "church" think the writer of that horrible book which should never have become a movie (battlefield earth?) is some kind of god.
Its like asking me to fear a cult that worships gerbils.
I don't think you should underestimate Scientology, just because a couple of it's members or it's viewpoints look goofy. Appearances can well be VERY deceiving.
I've read about Scientology and how they attempt to control their "members" and have used violence and threats of violence. I don't mean to say that they are a direct threat to anyone not involved with them.
I know two people whose parents were in Scientology - two different families, (actually 4 people if you count siblings of the people I know personally) and they have all been royally screwed up by the organization. Royally. Let's just every now adult kid has either substance abuse problems, psychological problems, severe anger issues to the point that they harm themselves and other people, and the like.
And as kooky and ridiculous as their "beliefs" seem to rational people, there are many Scientologists who are in positions of influence in many fields of endeavor - Greta Van Sustern and her hubby, for instance, and many Hollyweird types. They are heavy into the euthanasia movement as well.
They would like to be thought harmless.