I never implied taxing on trust alone, I'm simply arguing against total financial surveillance. Taxing in the mid-20th century did not rely on trust alone and it was a nice mix of trust and manual investigation in suspicious cases. I think such a mix is optimal for a predominant number of human activities and total surveillance should (almost?) never be reached for.

You can apply the same style of reasoning to end-to-end encryption. Various actors are aiming for total surveillance in that area too, it is most likely a terrible idea and we have precedent that the world works reasonably well without it.