Oh your condescending tripe doesn't puncture the balloon of anyone. It's recognised that the two RnB's are entirely different genres:
"Contemporary RnB or simply RnB is seen as separate and distinct from its cultural origins, applying only to the upbeat dance style of music innovated after the fall of disco music. During the 1980s and 1990s, musicians started to add more disco-like beats and high-tech production elements to the music, making R&B more danceable and modern. This modern form of rhythm and blues also incorporated elements of hip-hop, soul and funk."
It's the use of the same term to describe two entirely different types of music that irritates the exponents of the original R&B, especially as the heavy commercialisation of the recent upstart means it has completely usurped the other in the minds of most people.
Whether Count Basie thinks Jimmy Hendrix or Mariah Carey produces the better music is open to debate, but I don't think he would pretend they were the same genre.