It is only dismissive ironically - the author is not really belittling Slavic languages. Context and intent are important, and it is possible to be unduly sensitive.
I think it is worth expecting readers to expend a small amount of effort to try and assess a writer's intent, so that we might live in a world where people can use colourful language. Teasing someone is not the same as insulting them.
I think it is worth expecting readers to expend a small amount of effort to try and assess a writer's intent, so that we might live in a world where people can use colourful language. Teasing someone is not the same as insulting them.