Ideological opposition to extensive government is because government is inefficient. See the Laffer Curve. Actual demonstrated inefficiency is the proof, not the justification.
You see the moral hazard of electing people to run government who have a vested interest in being proven right about government being inefficient, don’t you?
I am fine with people who are realistic about government being inefficient, but I insist that they nonetheless try their very best to improve that efficiency (fully considered efficiency, not just making life worse for government workers or people seeking government services). The problem is when you elect people who have an interest in making sure the government is inefficient because then they can use that as justification to enact their ideological goals of cutting government services.