Yes, the WT has lily white cultural leanings. I am white, from E. Tennesse/SE Kentucky. Hillbillies were never criticized for their strange-sounding dialect and speech patterns. One ignorant hillbilly "brother" told me he was complimented by the circuit overseer's wife on a talk he gave. I knew this guy pretty well, and his speech was full of errors, as he probably had not even graduated from 8th grade.
My first congregation was upscale because it was the congregation of my dad's boss. Nevertheless, even though this was the least déclassé congregation I ever attended, there was still plenty of ignorance and bigotry.
When I got married, I moved to a congregation in the South that was in the process of desegragation. The white "brothers and sisters" always referred to tha African Americans as "the colored brothers and sisters." The CO's wife, a pioneer, criticized one of the black "brothers," saying he was for "black power." Actually, he was from Detroit,and was much better educated than the Southerners in the congregation. One "brother," a native Southerner, told me he thought the black householders were "impressed" that white people would come to their door to offer whatever we were "offering." The racism was obvious to me, but I don't think anyone there saw himself/herself as racist.