I would put two arguments against that. The first is that users of homeopathy are often engaged in a willing suspension of disbelief. There's no shortage of information about what homeopathy really is. And there's no shortage of anecdotes about converted sceptics who know it's a placebo, and are still surprised the placebo works on them anyway. I don't think this is a paternalistic approach
According to some studies you don't need a placebo to be presented as anything other than a placebo in order for it to work on the lucky people who are prone to it working for them (slightly bitter about only getting the nocebo effect, I feel this is a short straw).
A sterile water injection is more effective as a placebo than a pill. So if one was so inclined one could open placebo clinics in the NHS offering "it's not actual medicine, it's just water, but for some people the brain perceives an injection as "proper medicine" and it having an actual effect , so they get a reduction in symptoms. It won't give you any physical side effects"
It might be a cheap solution, but IMO not the best. I think you risk seeing people of a certain personality type, with real medical issues, being fobbed off in that direction, and I think you'll see a diminishment to some degree of how patients who do benefit from it are viewed by their clinicians. There is still a slight whiff of "oh you are just so suggestible" attached to having a placebo/nocebo effect, and I think that contributes to a sub conscious attribution of "weak minded" towards the patient, lowering the ethical barrier thus enabling less rigorous and committed attempts to provide treatment with good evidence and providing more than lip service towards informed consent.
Rather better IMO would be a speciality and facilities that comprehend the emotional element of illness, conditions and pain. And provide greater access to services that intend to offer support and treatment that (withput prejudice) accept the emotional element as part of the human condition, rather than "a weakness" that people should try not to have by pulling their socks up and starching upper lip.
I get pain caused by my head. I display strong physical symptoms when in emotional distress. It can quite literally bring me to my knees. I also cope badly with "real" physical symptoms caused by illness. My fear and distress exacerbates the physical symptoms. I think I may be up one end of the spectrum, but it is a spectrum. Where I believe "holistic" has a place is in remembering the patients are much more than the bit of them that has gone wrong. They are real live humans, with an emotional content, that unsurprisingly, to some degree, gets 'involved' when they are not well.
I don't accept that the best way to "deal" with that is via deception and an endorsement of the underhand and dodgy practices of Big Pharma being reproduced by Big Alt Med in the name of "if it's sauce for the gander, then the woo goosey here wants some too".
I think a far better solution is to work with what it is, part of the human condition, and enable medicine to better provide a humane and well rounded approach to patients as they actually are, rather than the more stream lined, less diverse and less emotionally complicated beings the system is currently more set up to deal with.