Being an open source architecture gives everyone (China, Russia, Iran, North Korea and basically everyone else the US doesn't like, which apparently is most of world) the freedom to innovate at a fast pace, this is what I mean by security flaw. My thought that they could somewhat try to slow down the development is based on the rational thinking that 1. They are actually leading the chip develpment and 2. if someday everyone gets high performance chips (which is still not the case with RISCV yet) than everyone can get better defense industries, better intelligence systems, better military equipment. I'm not implying that they are actively doing it but that it might be in their interest to do so to maintain some kind of military egemony over their enemies, or at least to never be in a significant gap with anyone.