If they are to follow the example of the first century Christian and the apostle Paul he said in Romans 15:20-23 20 My ambition has always been to preach the Good News where the name of Christ has never been heard, rather than where a church has already been started by someone else. 21 I have been following the plan spoken of in the Scriptures, where it says,
“Those who have never been told about him will see,
and those who have never heard of him will understand.” [k]
22 In fact, my visit to you has been delayed so long because I have been preaching in these places.
Paul’s Travel Plans
23 But now I have finished my work in these regions, and after all these long years of waiting, I am eager to visit you.
So if we are to follow the first century Christians why to they use the tract in areas that already have heard of Christ? I agree with you abandoned, next year will tell the tale with the count of Bible studies. Matt 11:19 "wisdom is proved right by its fruits"