It may be accomplishing what was intended -- but I don't think that people in the US (even those paying attention) understand what was intended. The lack of clarity in terms of regulations and collection of fees/tariffs show that it is not about efficiently collecting the $ but instead about breaking the chain of goods, from big business to small business to family ties, and cutting off flow to the USPS, supporting the privatization of the entity.
I agree that the de minimis exemption was being abused at scale.
I'm also salty that my family can't send birthday or Christmas presents, even a home-made card.
Whatever you want to say about this administration, always look one level down for the wholesale reconfiguration of supply chain and international connections that they're aiming for.