The sad truth is people can go from honouring the Lord and waiting for action to manufacturing action, and manipulation of theology.
We are called brothers with Jesus. The apostles healed. Acts 3:6
Then Peter said, “Silver or gold I do not have, but what I do have I give you. In the name of Jesus Christ of Nazareth, walk.”
It is a small conceptual step from saying we are brothers who can ask for Gods healing on another, to being actual creative power God speakers. This is what Benny Hinn and the NAR followers believe in latter rain heresy.
The problem is simple. If these teachers laid hands on someone, said "In the name of Jesus Christ of Nazareth, walk." and a crippled person was healed and walked that is true authority. But in these meetings, prayer is made generally and healed people are asked to come forward.
The Lord can heal anyone, anywhere as an answer to prayer, but it does not give spiritual authority to the teaching of a preacher. If the preacher heals like Peter, then this is different.
So when we look at these men and women they are preaching heresy, and claiming authority equal to the apostles yet failing to demonstrate it. This would therefore catagorise them as false teachers.
You need to make this judgement because what they are claiming is such a different gospel, it changes the whole tenor of the faith, and claims a new revelation. The church has always maintained His people span throughout the ages, being born again and trusting in the cross for their salvation. There are many expressions of this, but only the Lord discerns the hearts that are transformed, and those which have the shadow of godliness. We are called not to judge peoples hearts, but to judge sound doctrine.
Titus 2:1-2
"You, however, must teach what is appropriate to sound doctrine. Teach the older men to be temperate, worthy of respect, self-controlled, and sound in faith, in love and in endurance."
What these teachers are teaching is insane, deception, deluded and heretical. They are talking about dreams of visiting the 3rd heaven, and deriving spiritual insight and often changing their stories as they go along, taking precedence over normal relationships and scripture. A group like IHOP by prayer is trying to bring about the end times, and sucking people in to fanatical aspirations which end in emotional ruin. The healing crusades cause more disappointment than good, claiming to heal everyone if you have enough "faith", while condemning most to being unloved and uncared for. The reality is God will not heal everyone and all situations, but he will demonstrate real love through his people through good works, and occasionally miracles as He deems fit. You can try and invent a different God, but that is just delusion.