Actually, discussing traditional Chinese medicine now is useful, but not in the way you might think.

Anyone with a bit of scientific literacy should know that,
Pangolins can't cure anything, bat droppings don't improve eyesight,
Cordyceps, bird's nest, and donkey-hide gelatin are not very effective, drinking alcohol is carcinogenic, and so on.
But please note, very few people truly understand these facts and apply them in daily life.
You might think there are many, but that's just because they are clustered within groups with high scientific literacy, leading to survivor bias.

So here’s the question: for the majority who believe in "food therapy mysticism," it’s impossible to change their deeply ingrained beliefs in a short time.
Forcing facts to shatter their faith will only make them uneasy and also affect their immunity.
The key to treating and preventing previous pneumonia was personal immunity.

Therefore, the best short-term approach is not to expose this deeply rooted scam right away.
Let them keep a good mood. As long as they don’t eat wild animals and eat some bird’s nest or donkey-hide gelatin as a placebo, it definitely won’t harm their health.
Just let them do as they please.