If everyone is taking legal supplements that are approved I don't think anyone has a problem. The argument is against those taking substances that, if it were known that they were performance enhancing to the extent they would be placed in the banned list then, that for me, would constitute cheating. New drugs are produced every year that are undetectable until the authorities find ways to do so, takings them because the user won't get caught is cheating in my book
I agree and this was the point I was no doubt badly trying to make, I accept that there are harmless PED's from natural produce and mixed with other natural products that will never end up on a banned list, but taking substances that haven't been detected yet and have been specifically designed to enhance performance and are being taken only for that goal, and as soon as they eventually get detected and tested will 100% fall into the banned list is just plain wrong and cheating IMO.