Interesting how many seem to lump all Christians together and make judgments about them based upon the actions of just a fringe, few. Yet if this is done by a Christian you hear never-ending accusations.
The people who did this were wrong and misled possibly following a particular denomination which teaches in faith healing.
It is my personal belief that just like miracles and speaking in tongues and faith healing diminished in the period of Grace and faith. Many of those things were used, by the Holy Spirit, in order to confirm Christ and His statements to being God and God's Son.
Today we are in a time of Grace and where by faith we please God and not by sight or miracles or public healing. This isn't to say that there are not cases of healing, in response to prayer, or in the gift of tongues or other various gifts but, in my opinion, overall those things, as confirming signs, have ceased. Today it is the personal ministry of God's Holy Spirit with each person that God chooses to minister and approach mankind.