Scott Walker doesn’t like the idea of primary challenges to RINO’s
If you add "if the challenger has no chance of beating the Dem opponent" I would go along with your statement. At least, that is what I discerned from reading the links. But even if he doesn't like RINO's being challenged, it has nothing to do with his governing philosophy.
Let me ask you, who do you think meets your criteria and could actually win a general election?