The main complaint seems to be that Taleb violates an orthodoxy and not that he's factually wrong. On the issues of costs the cited paper says:
[...]
There are observed cases where homeopathy did lead to cost savings as Taleb suggests.
Interestingly the cited PLoS paper puts people who don't take homeopathy into the homeopathy group based on the fact that they could get it for free:
[...]
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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