Gee Whiz Chris, to me, the only reason that selection by Nellie can be associated with hip hop is that HE is on it. If the CW singer was singing it alone, then the last thing that would come to my mind is that the song was a hip hop one.
There are rappin singers and singin rappers. But a song is a song is a song, and a song is music and rap is rhythm. But not to worry. They can co-exist.
I would be interested in what people who are actually of the "younger" generation have to say about all this. I think a lot the Millenials would be hard pressed to give a coherent defintion of hip hop. Ironically, I think they would be a little more articulate when it came to Jazz and Blues and would probably describe it as old school music that old folks like - not music that the majority of them will become converted to via hip hop. I think what attracts them to Rap are the beats as much as the lyrics, which they may be able to rotely recite, not really concerned with the content. As for the ones of the Gen-Xers, rap and hip hop are just taken for granted, not something they are fixated on, and a lot of them of are into the love songs that I would not consider hip hop. R&B is still alive and well and smooth jazz has a respectible following.
I cherish the past, but I don't think you can go home again. Straight ahead jazz will remain esoteric and music in general will just be something people download and hum along with while texting and keying and posting when they're not watching prime time soap operas and reality shows on TV.
But good music is good music and as long as we have ears, it will never die.