Not true at all. I'm assuming you are not from karachi.
Even though I like musharraf but the establishment and musharraf is too be blamed for nro and eventually 18th amendment. Pakistan had almost got rid of ppp and PMLN. But no brought them back and the first thing they did was 18th amendment.
There is no say of Karachi people in karachi local govt, it's Sindh govt say, and Sindh govt will always always be ppp. Karachi people voted for pti because of this same blame game from non karachi folks about mqm this and that but pti failed as well because nothing can be done to ppp due to 18th amendment cancer.