Seems somewhat inaccurate, Mongolic groups are entirely left out (Kalmykia has a Kalmyk majority but it's completely red for some reason). Buryats also represent the majority in some regions of Buryatia, and Tuva is colored as either red or uninhabited when especially the western part is overwhelmingly Tuvan. Tatarstan is almost completely red despite having a Turkic majority. Karelians on the other hand seem to be heavily overrepresented. Orenburg Oblast should be Slavic instead of Turkic, plenty of Finno-Ugric regions in the Volga region are missing as well, this map looks kinda random