The same applies when buying microcontroller starter kits, like the MSP430 for school.
That, and clauses about not using it to controller missiles. Which is admittedly more applicable than the weapons of mass destruction (exaggerated) clause in iTunes.
On most orders for electronics parts, even if it's European distributors shipping to me, in Europe, I'll have to click some boilerplate where I assert to not make the chips available to terrorists on the Denied Persons List of the US department of commerce, which is conveniently available in ASCII...
https://www.bis.doc.gov/dpl/dpl.txt