Some of those who preach a gospel of poverty are in fact quite well off, while their people endure their doctrines without even the hope of any improvement. A number of these ministers operate from mega churches or almost mega churches (while preaching against mega churches).
The gospel of poverty does not come from Scripture, but from human tradition, and many preachers make a decent living from it. In fact, it is Catholic tradition. A priest can even take a vow of poverty, but he can live like a king as long as he does not claim to own any of the properties, mansions, and automobiles that he enjoys.
The Protestant gospel of poverty is not far from this, but it is more devious in that it is less obvious, and it is almost certainly more self-righteous. All of it is satanic. It degrades humanity, especially believers, and makes them suffer without hope, for no reason.
This is the anti-health and anti-wealth gospel. It does not preach suffering for Christ, but suffering for the sake of suffering. The people worship suffering itself. This gospel makes people throw out the blood of Christ like it is sewage water. It pervades Protestantism. The only people who fight it are labeled as heretics.