Ah, so this isn't so much a US change, but the rest of the world adopting new rules governing e-waste imports and exports.
It sounds like the rules on old electronics from the US are stricter because we're almost never parties to treaties and conventions like this.
https://www.basel.int/Implementation/Ewaste/EwasteAmendments/EwasteAmendmentsFAQs/tabid/10107/Default.aspx
https://web.archive.org/web/20241021185837/https://www.epa.gov/hwgenerators/new-international-requirements-electrical-and-electronic-waste