I'll take the possibly controversial position that WireGuard's opinionated approach to cryptographic choices without the option for negotiation was indeed the r

I'll take the possibly controversial position that WireGuard's opinionated approach to cryptographic choices without the option for negotiation was indeed the right call, but it would have been a better and even more successful protocol if it used FIPS compliant cryptography. Taking the DJB crypto path gave Wireguard some subtle advantages to implementation ease-of-use that are almost entirely overshadowed by the difficultly in building a new, secure cryptographic protocol from scratch regardless of what algorithms you're using. The tradeoff was that there are plenty of places it will never be used due to standards compliance requirements which as you point out also has significant implications for efficiency in hardware. Wireguard is cool. I think very little of that coolness has to do with the DJB vs NIST cryptographic choices. And taking the DJB path unnecessarily limited the impact of its coolness at least for now.