I think Russia has a point. As it says in the article, Russia thinks the treaty no longer responds to the security interests of the Russian Federation and I broadly agree. Look at the last 18ish years and the big growth area has been NATO - nemesis to Russia's own former alliance - and several former Russian allies have actually swapped sides. So while we in the West have technically expanded, Russia has been controlled by the CFE treaty.
If you look at it from a purely Western angle Russia is becoming increasingly aggressive - first the increase in Bear flights, now the decision to ignore the thrust of CFE - but balance that out with NATO's far from dormant growth over the past few years, including US missile defence proposals that would also happen to neutralise Russian ICBMs and I'm surprised it's taken Russia so long to figure they might have been had.
Russia is finally responding, not stirring trouble.