That may be true, but I think healing is available now. Jesus did not need man-made technology to heal. Somehow He showed people how their faith could become operative. I may not remember all the miracles I've read about in the New Testament, but I only remember Jesus using mud made of spit and dirt as a healing "technology". Most of the time, it seems to have been faith alone.
Even for people who don't think they have a lot of faith yet, God has provided means for our healing everywhere in the natural world. I think of "the sacred plant" (cannabis) and others, even dandelions (which seem to detox the liver). A certain sugar, mannose, prevents E. coli from adhering to the urinary tract thus preventing infections.
My own healing took place as God provided miracles and guidance to me (I took a number of supplements) so that I could get off 4 prescriptions. I don't use pharmaceuticals virtually at all anymore, not even aspirin.