In fact they're a little less accurate than the Scuds, but the Scuds were carrying a conventional warhead. And because the Scuds were carrying a conventional warhead, they didn't cause much damage outside of the immediate area where they landed.
In fact, I would be more reassured if Iran were spending its time and effort perfecting the accuracy of its warhead, because then I would think that in fact perhaps Iran intends to put a conventional explosive on this warhead and wants to be sure that it can deliver it directly on the one building that it's targeting in Tel Aviv. But instead, Iran has devoted its efforts to developing longer range for these same inaccurate missiles, missiles that really don't make much sense, unless you plan to put in them some kind of unconventional weapon.