Placebo ethics

It is accepted that placebos are not ethical because they require deceptions. But this view does not account for the evidence that we don't need deception for placebos to work.
Further mistaken claims:

• We can only trust placebo controls. New treatments that come along can be compared with a proven effective method. To be effective, it should be at least as good as the old one.
• Placebo controls provide a constant baseline. This view is based on the view that placebo treatments do not work. It is mistaken. In a systematic review of placebo pills in ulcer trials, the placebo response ranged from 0% to 100% (complete cure.)