'Rock and Roll' and 'Rock' are different things. Whether you like it or not, the Rock and Roll Hall of Fame has all different types of artists inducted. Should they go back and weed out the ones you don't consider to be your definition of 'Rock'? No, that would be ludicrous. In the same vein, the new artists to be nominated should follow the original aim of the Hall of Fame.How old are you? I'm 56. I grew up listening to WKQQ, WEBN, etc. They were all marketed as playing rock-N-Roll music. They did not play pop, R&B, Jazz, Country, etc. Check out Sirius/XM radio and channels like classic vinyl and classic rewind are categorized as rock. They don't play Whitney Houston. Channels, such as the blend are categorized as pop. They do play Whitney Houston. The radio stations that played Whitney Houston, for example, never marketed themselves as a rock stations. The expansion of the term has come about in the last few decades to include all pop music. That doesn't mean the term didn't start out as a reference a specific type of music and has been perverted over time to mean something entirely different.
It's really very simple.