From my personal perspective, most TCM is medically effective, but unfortunately cannot be proved by current scientific method. The most commonly used RCT method is not applicable for Chinese medicine. If you ever tried TCM and know how it works, you understand why. Acupuncture and Chinese medicine have the same principal. The Real World Research (RWR) or something similar might be a good option, but still developing. In a word, failure in scientific tests doesn't mean TCM's efficacy is pseudo-science; it may not be science at all. The word 'scientific' is not equal to 'correct', and there is a much bigger world outside of science.