I learned something new from the article and that is that GCJ-02 - the coordinate system used in China - is terrifyingly terrible:
"'Topographic map non-linear confidentiality algorithm' is a geodetic datum formulated by the Chinese State Bureau of Surveying and Mapping, and based on WGS-84. It uses an obfuscation algorithm which adds apparently random offsets to both the latitude and longitude, with the alleged goal of improving national security. There is a license fee associated with using this mandatory algorithm in China."
It could be that they had multiple tabs open, were drafting their comment in an external text editor, and hit Ctrl-Tab one too many times before pasting their comment into the textarea.
"'Topographic map non-linear confidentiality algorithm' is a geodetic datum formulated by the Chinese State Bureau of Surveying and Mapping, and based on WGS-84. It uses an obfuscation algorithm which adds apparently random offsets to both the latitude and longitude, with the alleged goal of improving national security. There is a license fee associated with using this mandatory algorithm in China."