Don't know about EFT, but I do know about water fasting for weight loss from personal experience.
I used to think the good thing about fasting is that it's safe for everyone, because you don't take any supplements. But I now know this is not so, in fact to your credit you pointed out we have "regular customers" stretching spans of years, and that wasn't quite right. That opened my eyes I have to admit.
It's certainly worrying that people may be using this as a drop in lounge for EDs, and that fasting is part of the ED process, worse when you consider that EDs are shrouded in dishonesty and self denial.
I think Curezone is good for people sharing experiences though. But sometimes you have to read between the lines yes?