We do and we dont frequently agree on whats "decent".

Most routers implement a set of security standards/protocols for VPN's that are "decent" and make the play nicely with each other.

The "Redis protocol" gets re-implemented frequently because its "decent" and useful to many vendors.

I cant speak for "encryption" but there has to be numerous implementations of various algorithms.

And this is true for many other protocols.

UUID seems mathematically "provable" or "verifiable", why are we wasting time on needless "wrong" / "non decent" implementations?