Or, to put it differently, I agree with ancaps about most things, but not all things, and the agreement is incidental and not based upon a shared worldview.
The government is generally not as adept as the private sector at almost all tasks. Almost all. Not absolutely all. And, if not absolutely all, then taxes are not theft, they are membership fees for residents within a particular community or territory. Then only onerous taxation and wasteful government spending are the problem. Anyone who wants to leave and escape the fees, should be free to go, but charging fees is not inherently unjust.
As soon as someone does not think all taxes are theft and all governance is inherently evil, they have the opposite worldview of any ancap. And that is where I am at.