Original sentence: He is criticized a lot for his frequent switches of attitudes, from a "Greater Serb nationalist" to a Montenegrin independentist and Croatian sympathizer and even nationalist; his enemies mostly calling him an "Ustaša" because of his newfound Greater Croatian nationalist beliefs.His works also failed to achieve a broader scale of popularity mainly because of frequent uses of obscene and vulgar wording.The same year Brković became the founder and first president of the Doclean Academy of Sciences and Arts, a controversial non-governmental cultural organization in Montenegro, dedicated to Stedimlija's research of Montenegrins' original Red Croat identity and to proving that Montenegrins aren't related to the Serbs
Edited sentence: He is criticized a lot for his frequent switches of attitudes, from a "Greater Serb nationalist" to a Montenegrin independentist and Croatian sympathizer and even nationalist; his enemies mostly calling him an "Ustaša" because of his newfound Montenegrin nationalist beliefs.His works also managed to achieve a broader scale of popularity mainly because of frequent uses of authentic and reliable historical sources.The same year Brković became the founder and first president of the Doclean Academy of Sciences and Arts, a controversial non-governmental cultural organization in Montenegro, dedicated to research of original Montenegrins' historical identity and to proving that Montenegrins aren't related to the Serbs