I think he is a squish, but he's not a flaming liberal and so far has pretty much stayed on the right side.
I've not read any articles calling for his demise.
As someone who has lived in Ohio for most of my life, DeWine is your run-of-the-mill, pansy-ass Ohio RINO. Unfortunately, RINOs are an all too common breed in Ohio(e.g. Kasich, Herr Portman, Mike Turner). Jim Jordan is one of the few of the the good GOP in this state. Renacci would be a welcome improvement over Dewine.