To train and eauip to do what? Evangelize!
The Church today is not very evangelistic. The churches are not evangelistic because the pastors are not evangelistic. The pastors are not evangelistic because the seminaries teach them to not be evangelistic. They teach them that evangelism is not their job.
Training and equipping is far more than making evangelists.
Do not the Scriptures state that
some (not all) are evangelists?
All are to carry the commission of the Lord given first to the Apostles, however, not all are pastors, teachers, evangelists. Some are teachers, some baptize.
Was Paul, Barnabus, Phillip, Steven, Peter, John ... evangelists?
Or were they servants of the Lord serving in the capacity and ministry as a lay missionaries, lay deacons, lay Apostles...?
I am not claiming the seminary structure is best. The early church had no such schooling, but were highly effective in living what was believed.
As they lived, they took advantage of opportunities God put them in to have unrestricted light and water from the Lord come from them.
Most believers are a crimp in the water hose. At best they trickle. But that is not a schooling problem, it is a matter of a lack of submission.