It's true there's been tremendous changes in the treatment over the years.
But, the stigma over ETC is there due to it's early stages where they literally ruined people's lives because they were experimenting with them. And there is still the issue of memories being forgotten today.
In the end, I don't think it's wrong for any medical treatment to have to show prove of it's safety and that the medical treatment works before it's given to people. We are well past the point of snake oil. And anedotal evidence isn't prove. The scientific method is the way to measure efficacy. Because people's lives are at stake. And yes, their memories make up a large part of our lives. Who are we, afterall, without our memories?
Shalom!