What you should be concerned about is the things hidden in plain sight. Things that are there but you can't appreciate because you don't understand the context, it challenges an already held view or is something you can't practice.
There countless comment on hacker news over at least the last five years trying to explain why less things are happening in the west and more things are happening in China. So no one should be surprised that there are things going in China that we don't appreciate. Still it is usually met with disbelief.
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On a more practical note, just translate it. I might not work out, but poking things often gives you more information than you had before. Or it may at least can actively confirm what you were thinking in the first place. That is sort of the original hacker mindset.
I'm curious how much stuff we're missing out on because it doesn't appear on our radar. It has happened a handful of times so far that I googled something and ended up on a github repo that had a Chinese readme only. Only from context I could guess what it was about. And I wouldn't even be surprised if bilibili had an English readme for their stuff.