https://www.wired.com/2013/05/google-pharma-whitaker-sting/
(This is only the most infamous case from the past 10 years)
So if the post author's only argument for DragonFly is that China needs Google because China needs a search engine that doesn't promote fake meds, it's a false premise.
EDIT: Changed 5->10 years since the case in question was from 2009-2011. Also, as another comment points out[1], a Chinese state medical clinic was responsible for the Baidu fake medicine incident. It's highly unlikely that Google would turn down a government agency from its ad buying. So again, not seeing a huge difference between Baidu and Dragonfly, other than the quality of their results (but not their ethics).