Even more so - this country is not flat lands like Iraq but consist mostly of hills, mountains and deep valleys. Plenty of places to hide and they have had a considerable amount of time to fortify their positions
Their people are starving and they couldn't possibly sustain a military offensive against our air force or hunkered down in caves. Sooner or later, they'd run out of supplies and either make one last charge (to be destroyed by our air power) or surrender. I'd equate it more to Gulf War I, when we bombed Kuwait and the surrounding area of Iraq for weeks and when we finally went in, we had them surrendering by the thousands. If you take out Kim's small nuclear capability and most of his artillery, they are done. We'd bomb them with impunity because we'd establish air superiority over NK within a day or two, maybe even hours.
Now, to be clear, I am not in favor of war. I've been to SK and I don't want it heavily damaged or my friends there killed. But at some point, if NK keeps this up, something has to be done and since China and Russia are pussies and won't put a stop to it, SK might have to.