we should define more precisely what we mean by stereotypes. here, socially shared opinions regarding different characteristics of a language: its beauty or ugliness, its level of difficulty, its poetry...? i would say that the points concerning the difficulty of lithuanian and its lexical proximity to russian were stereotypes.
i heard things like 'this language is useless, only spoken in russia' - wrong. 'they (russian people) would pay you a lot for you to speak their language' - wrong, more and more are speaking english and even french, but it is true that they pay a lot for any service you provide them.