Worms rods may not necessarily have to be a pool cue to be worm rods, it depends greatly on how sharp your hooks are, how you rig your soft plastics and the application to a specific technique or place, so saying that a medium power rod is not good as a worm/jig rod is highly questionable just to say it in a civilized matter.
My worms rods may be from UL all the way to H, would I use a UL rod to fish for example my everyday lake ( Snag Paradise ) ? nope, it would not be such a great idea, the rod & line don 't have enough power to horse a fish out of heavy cover, the rigging method for such will also not be appropiate because it will snag in an eyeblink, and obviously, I my hookset is completely different when I 'm using a noddle than when I 'm using a broom stick.
The fact that most prefer MH rods doesn 't mean it has to be that way, it 's far from being a "rule", so don 't feel humbled, there are many ways to skin a cat and each and every one of us knows several of them but that doesn 't mean it 's carved on stone.