To be fair, a placebo can be helpful in its own way. And a 'good' placebo might need to have various methods, tastes, shapes, sizes etc; on the other hand it would be more psychotherapy than what people think of when thinking 'medicine'.

Something that 'helps' in a measurable way with no drawbacks is a useful tool to have. It does of course not mend broken bones or suture cuts in the skin.