Yeah, but what might seem lazy in hip hop (not making your own beats) is made up when that artist writes the lyrics. It's much harder to write something meaningful, lyrically powerful, and that sounds good - especially when theres (typically) 3 verses of about 20 lines each, a chorus, etc. where as in a pop song, u basically write 12 lines for the verses, and a 4 line chorus. So thats 16 lines altogether, and pop music doesnt rely on powerful lyrics, so nothing more than a single rhyming syllable is required in each line, making it WAY easier to write a pop song than a rap song. Some songs dont rhyme at all. Rap is probably the hardest genre to write for, so u cant expect every rapper to also make their own music. thats why i reckon doing both deserves heaps of credit that some artists like eminem or jay z dont always get.