Shunning is for sure radical. You tell a JW that islam, and the amish, and the mormons, and scientology and other groups do the exact same thing for the exact same reason... they just give you a blank stare like you never said anything
and go on saying things how if you loved someone very much and someone criticized them you'd shun the critical person... INSANITY!! They totally miss how insane this practice is. With myself I have been seeing this first hand within my family. Even some can't tell me how what is happening does any good or makes any sense.