Think about what Vidiot said, the following members "the milkman, postman, UPS" are on a time limit and really don't want to spend anymore time at your house than needed. Who wants to come inside your house and offer a "Free Bible Study" with anyone willing to listen?
With more Witnesses leaving the "door to door" ministry in lieu for the stationary magazine rack missionary position, maybe all our concerns might dissispate? Your right when you say, their minor but again they have more access and trust from the constant conditioning by the Watchtower telling them "Your among brothers and sisters who care! Jehovah hand picks each elder, God's Organization is the best! It's Jehovah's Family!" mind control that allows more freedom to hurt children than regular churches.
When parents put their kids in church camp, church get-away so their not watching over them, yes those churches now gain greater access but less than the mind control exerted by the Kingdom Hall!