Nope. I'm saying that we are called to be faithful, not necessarily successful.
I would challenge you to back that up with scripture.
In fact Paul looked for success in his evangelism:
For though I am free from all, I have made myself a servant to all, that I might win more of them.
To the Jews I became as a Jew, in order to win Jews. To those under the law I became as one under the law (though not being myself under the law) that I might win those under the law.
To those outside the law I became as one outside the law (not being outside the law of God but under the law of Christ) that I might win those outside the law.
To the weak I became weak, that I might win the weak. I have become all things to all people, that by all means I might save some.
I do it all for the sake of the gospel, that I may share with them in its blessings.
I Corinthians 9:19-23 (ESV)
Paul did not just preach the gospel and then wash his hands of what he preached and the people he preached it to. He had genuine concern for the people to whom he preached the gospel. He worked to remove possible offenses that may interfere with the lost even giving him their time to explain the gospel. He not only understood the evangelist job to be a seed thrower but a seed cultivater. This lines up with what Jesus said about the Great Commission:
And Jesus came and said to them, "All authority in heaven and on earth has been given to me.
Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age." Matthew 28:18-20 (ESV)
Jesus never broke this Commission down to assign different parts to different people. He presented disciple making as an essential part of the gospel. If you leave one side out you have an incomplete gospel.
Here are the problems with the idea that one can simply stand on a street corner and preach at people:
1. There is no connection made with the lost. Paul was very concerned that there be a connection with the lost. To the Jew he became a Jew, to those under the law he also became under the law etc. He did not just preach at them he worked to remove obstacles that would make the lost obstinate to the gospel.
2. There is no obvious love for the lost. When we do something like this simply out of obedience and not with any care or concern for the people you are preaching at this becomes an obstacle to the gospel just as being a Jew did with Paul or being weak, or under the law. We are talking about something that invokes much emotion and rightly so. Presenting the gospel in a mechanical way without an concern for the people to whom you are giving it to is sin.That is not what God intended us to do and it is not the gospel.
3. Once we have delivered the gospel, once we have delivered it with passion and with genuine concern for those to whom we are presenting it to, and once we have delivered the gospel hoping and praying they will receive it with their whole heart and with every intention to help them grow in Christ should they be saved, then we can say "I have done all that God has sent me to do, it is up to Him, Lord please save them!"
4. This hit it and quit it mentality with regards to the preaching of the gospel is ungodly.