Lol its a fail argument. Let me prove to you that punk rock sucks:
http://www.youtube.com/watch?v=9Ht5RZpzPqw
http://www.youtube.com/watch?v=XAbcgmwq3EU
But its not punk rock you say? Well there lies the fallacy
Alot of people who criticize hiphop have no knowledge of the genre and alot of the times its based on stupid shit like "its not music" and you can generally dismiss these kind of critics as racists who will find anything to rag on what black people do. (Im not saying thats what the op is though, just saying his argument is invalid cuz that music isnt hiphop)
Here are some actual hiphop artists:
http://www.youtube.com/watch?v=ZErZm8lMMm8
http://www.youtube.com/watch?v=nruVyJmtcqo
http://www.youtube.com/watch?v=bjCHXJA9D9E
http://www.youtube.com/watch?v=PBlMrGgpwXE
Again, to re-iterate, you cant cite commercial horse shit and call it hiphop
And i know the bands i linked are old, im just outta touch with hiphop having drifted to other genres over the years, but i heard a DJ play some recent stuff and it was 2 hours of solid hiphop, its just underground, once again.