It should be up to us as individuals to decide who we should be around, not the WTS.
As far as the example of would we want a pediphile in our hall: NO, they should be in jail where they belong, not in the congregation or roaming around the streets for that matter.
When someone has errored, they should be around loving people to help them get their life together not being shunned.
Shunned is hateful, and goes against everything God is.