If it wasn’t obvious that the Debian box is a parody, here’s what the Japanese text along the top reads on each box:

Please read the instructions carefully and use it under the guidance of a physician. It is strictly prohibited to be used in food and feed processing.

Please read the installation instructions carefully and use it under the guidance of the administrator. It is strictly prohibited to use for server installation.

How do you identify it as Japanese? I see no hiragana or katakana, which is how I usually identify text as Japanese instead of Chinese.

You see, he knew because he is wrong and it is indeed Chinese