I have been dealing with this issue for years, the problem goes right back to the manufacturer. Open any product made in china and read the operating instructions and you begin to get the idea. The engineer who originally produced the document can’t check his own work because English isn’t his first language, he relies on interpreters who don’t necessarily know anything about the subject material. He may be able to speak English but not read and write English.
On top of that add another tier where different terminology is used, for example a prepared surface verses and unprepared surface (Europe) and a sealed surface verses an unsealed surface (Australia) A prepared surface is not necessarily a sealed surface and you begin to see the magnitude of the problem.