They are protocol vulnerabilities, not implementation vulnerabilities. I also tend to think the evidence suggests being wary of nation-state intelligence influ

They are protocol vulnerabilities, not implementation vulnerabilities. I also tend to think the evidence suggests being wary of nation-state intelligence influence on networking systems - the only ones who haven't done it are the ones who lack the capabilities. Cisco's apparent inability to stop its code base from constantly regrowing backdoors will compromise you just as quickly as whatever Huawei may be up to.