I'm not one, but I hear that the big bragging point of the Marines is that every Marine is a rifleman. Anyone want to correct me?
Each believer is to be an evangelist, but it may be beyond their pay grade to organize, implement, and instruct on the best methods and opportunities on getting it done. If someone has a spiritual gift of such things, and he can get it done more efficiently by not having to also make tents (shout out to the Apostle Paul) then what's the harm?
Part of leadership and forward thinking is doing things that may not have been done before to help your cause.
Phones, microphones, computers, televisions.....shall I go on??? are not specifically mentioned in scripture! Guess we gotta be like the Amish and avoid using such things in the purity of the scriptures even if they can help us get our spiritual commission accomplished. Break out the buggy Ma!
This is why I'm reform minded (in my congregation only...y'all do as you please). Call it what you will( pastor, bishop, evangelist, congregation leader, rabbi.....) but there will always need to be leaders and elders in the faith helping the weaker brethren in their walk and talk as believers. Spiritual care will always be needed. The more effective they are at training others, the more time and space they will need to handle the harvest. Are 40k member congregations with a Joel Osteen smiley faced motivational guru the answer....heck no! A modest flock of 25-100? Sure. When they get bigger.....branch out and repeat the cycle.