I'm reminded of "Dr. Death" aka Paolo Macchiarini, the former stem cell surgeon who washed plastic tracheal implants in a "stem cell bath" that did absolutely nothing to the plastic then inserted in people's throats only to cause them to choke to death. He was sentenced to 2.5 years in prison by a Swedish court for aggravated assault against patients he treated, but before the medical board finally took action against him he was heralded as a stem-cell revolutionary.

https://www.science.org/content/article/disgraced-surgeon-pa...