I’m a non native English speaker.
Though I can read the English Doc, it takes me triple time to get the same information from a English Doc than Chinese Doc.
I believe this is not a individual problem, but a common problem for non English Speakers.
My personal solution is every time I read some part of the doc, I translated it and make Markdown Notes. But that’s experience is nasty.
If possible, I wish docs.syncthing.net could have translated version where some heartful users can help translating the Doc.