Interesting. Do you have a source for this? In addition to obsolete warheads, I suspect most of those ICBMs arent in very good shape either since those things are difficult an expensive to service and maintain.
basically everything written in the press about Russia's Topol-M platform includes their claim that Topol-M can evade any missile system.
I believe there are about 60 operating units - the amount may vary from article to article.