If someone isn't crazy about Scientology, then don't be a Scientologist.
The part about “forcibily converting people with the business end of a weapon” might have a little truth to it. More than a few former Scientologists have come out with stories about abuse, violence and blackmail to keep them in order.
Other than that, let people believe what they want to believe and let their leaders take the suckers’ cash.
For starters, setting up “schools” for the purpose of slow indoctrination. I’m not sure if they forcibly convert people “with the business end of a weapon,” but they sure get enough information about someone through counseling. It comes in handy when one wants to leave.
Scientology was written by a sci-fi author.
Some in the organization are pretty rough (verbally harassing and extorting) on those who want to leave the cult or even more explicitly, expose what they saw while in the cult.
The process of cleansing yourself of impurities is called “auditing” and it will cost you $$$ to read the grand SF novel that “ElRonHoover” wrote.
Germany tried to prohibit it. Bill Clinton saw it become officially recognized as a religion and not a business by our government.