Debian or Arch or Ubuntu never ask for my confirmation ?
Example :
You acknowledge that openSUSE Leap 15.3 is subject to the U.S. Export Administration Regulations (the “EAR”) and you agree to comply with the EAR. You will not export or re-export openSUSE Leap 15.3 directly or indirectly, to: (1) any countries that are subject to US export restrictions; (2) any end user who you know or have reason to know will utilize openSUSE Leap 15.3 in the design, development or production of nuclear, chemical or biological weapons, or rocket systems, space launch vehicles, and sounding rockets, or unmanned air vehicle systems, except as authorized by the relevant government agency by regulation or specific license; or (3) any end user who has been prohibited from participating in the US export transactions by any federal agency of the US government. By downloading or using openSUSE Leap 15.3, you are agreeing to the foregoing and you are representing and warranting that You are not located in,under the control of, or a national or resident of any such country or on any such list. In addition, you are responsible for complying with any local laws in Your jurisdiction which may impact Your right to import, export or use openSUSE Leap 15.3. Please consult the Bureau of Industry and Security web page www.bis.doc.gov before exporting items subject to the EAR. It is your responsibility to obtain any necessary export approvals.
Out of curiosity, would they be subject to these laws/protocols/regulations if they are (developers or organization) based in the US, but offer releases hosted elsewhere in the world AND/OR develop the product with code hosted elsewhere in the world?
It’s one of those bureacratic things. You could download OpenSUSE in a restricted country and install it, but if you were in the USA and transfered the data to a restricted country you would be in violation of ETAR restrictions, even without the EULA