Comment by jandrewrogers

I never blamed UUIDv4 for broken entropy sources. A broken entropy source breaks UUIDv4 even if you are using it correctly.

There is a long history of broken entropy sources showing up in real systems. No matter how hard people try to prevent this it keeps happening. Consequently, a requirement for high-quality entropy sources is correctly viewed as an unnecessary and avoidable foot-gun in high-reliability software systems.