They are "WHINOs", Republican "Not-Even-In-Name-Only," my-way-or-the-highway conservatives. In fact, I'm not even sure they're conservatives; they impress me as simply cranky old farts.
Yes, they are " my way or the highway " types, which is what "dog in the manger " refers to. Read Aesop ... his tales never pale, nor grow stale.
Unfortunately, for some, they only imagine that they are Conservatives and know/understand politics; neither is true or factual. Delusion is their comfort, but it won't ever " save " them.