Why does korean spamming on most fourms?

I seen most fourms such as Minecraft fourm,Orchid fourms and other website fourms there most spamming by korean

Here pic: https://gyazo.com/76858179f8111ee0fa85b6e4e108e54a
Added (1). Is a korean bot?

Here another fourm: https://gyazo.com/f9a4be664d904b20a926daf417b5b041

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