In the link of the original post that goes to a blog also has a comment where the solution was to simply purchase them out of the country. Could you provide a link? I clicked on the first one and it's from China. https://www.amazon.com/Cnloyua-High-Efficiency-Hard-Board/dp/B0BS1BN9F1/

Reading the references to the executive order I initially got the impression that it's only for imports and exports but I see non Amazon sites that sell cap fillers warning to have a DEA license. https://www.ipharmachine.com/semi-auto-capsule-filling-machine-cn-120scl