Those kinds of problems aren't particularly new (PGP comes to mind as an example back when you couldn't export it out of the US), but it's a reminder that a lot of open-source comes from the US and Europe and is subject to western nation's will. The US is also apparently thinks China is "stealing" RISC-V.
To me that goes against the spirit of open-source, where where you come from and who you are shouldn't matter, because the code is by the people for the people and no money is exchanged. It's already out there in the open, it's not like it will stop the enemy from using the code. What's also silly about this is if the those people were contributing anonymously under a fake or generic name, nothing would have happened.
The Internet got ruined when Facebook normalized/enforced using your real identity online.