The visual cliche of the "evil Chinese man in front of a red background with five yellow stars" has come as far as that of the "hacker guy wearing a hoodie in a dark room with obfuscated JavaScript floating in the frame."
The "red background with five yellow stars" is the chinese flag. It's a common graphic pattern when you want to convey the idea of a person of geopolitical interest. Like putting Biden in front of the American flag o Macron in fron of the french one. Isn't specific to china nor represent any anti-china meaning.