no its not weak, neither is gangster, neither is self portrayel, neither is super intelligence confidential shit.
As a matter of truth, hip hop is a family of 5 elements, and rap in itself is split into so many forms. Gangster has the club feel to it, how can u flex a girl in a club whilst playing fucking jedi mind tricks - 'immaculate conception ' on? it wouldnt feel right. But if you had sum commercial shit on like - Joe Budden, u can get ya bitch

. Logically, story telling and self-portrayel is where most skill is involved, and deep thoughts need to be taking into account for it. Rap has developed from a =
'Im gonna rock that in the street"
"I got that big, phat funky beat"
to
"And in a slug fest I get physical like physicians"
"Invisible like magicians with mystical mic traditions"
See...............
personally, i like self-portrayel and story/message telling