When dubs are willing to obey their shunning doctrine fully in a public place, it does shock normal people with normal feelings. However, most dubs are devious enough to be marginally polite in public when they know their intolerance is going to show like an unzipped fly.
The single WTS doctrine change that would bring them down is if they allowed dubs free contact with the exdubs. The WTS would fold like a dying camel within a year.