Hot take: good The de minimis treatment has been abused beyond original intent. Specifically by China, but you can't fix that without fixing the general case. Fast fashion and other low-value drop air shipping across oceans is ecologically insane: as a planet we literally can't afford to keep doing this. And the US, by virtue of population + relative consumer wealth, is the biggest customer for this. Furthermore, the…
Small D2C packages aren't necessarily worse ecologically than a big US retailer importing a bunch of junk to store in warehouses and maybe sell to customers (else landfill).
If we want to argue the former, I'd say we need to start with non-negotiable 100%-biodegradable, 0%-plastic packaging.