I am sure there are some who fall into this category, but my experience in church, my local church is the opposite. If you have over 30 years of people getting cancer, being prayed for and dying, you get the clear impression healing after prayer is rare.
One couple I know believed so strongly in God demonstrating His presence through healing and prophecy wanted to predict when they would give birth to the day as a witness. As far as I remember they got it wrong within when prophesied within the same week.
Other friends of mine wanted miracles so much, they were healed of the common cold. Another prayed for their pet dog. This is not faith, it is some desire to prove faith in action through miracles is the spiritual issue in the Kingdom. But walking in love and purity is the issue, a much harder and eternal perspective.
My sons wife came from a group where the leader got cancer, and believed God had healed them, if they had the faith. They died, which devastated the group. So when Jesus calls you home, it is satan and defeat, but if a miracle happens it is Gods will and justification of faith. The idea of God being sovereign and seeking His will seems to not occur to these folk, because their ministry is so important, it must carry on. A pastor of the church they attended had a word of knowledge, that the reason for the spiritual blockage was an event my son had aged 8 years old.
The trouble with this approach is it has little meaning and is more superstition than walking in faith and love, and causes confusion and the wrong emphasis on fellowships. Some have gone so far, that unless there are people slain in the spirit, angel feathers present, angelic jewels left, gold dust appearing, God is not moving.
Jaded is probably not the word for it, fraud and lies comes a lot closer.
God bless you