Because seeding a hash function with randomness instead of an empty buffer (100% determinism) is imho better for a generated secret. It takes the single point of failure out of your dice and (perhaps) the hash function, depending on the error.
Reproducibility of your entropy is cool and I can see that being a thing for some among us, but that is technically import() for a signer, not secure generation. So while there is arguably also a case for deterministic seed generation alone, I'd scope that out. Deterministic generators do not need random data - it just confuses the issue.
Because seeding a hash function with randomness instead of an empty buffer (100% determinism) is imho better for a generated secret. It takes the single point of failure out of your dice and (perhaps) the hash function, depending on the error.
Reproducibility of your entropy is cool and I can see that being a thing for some among us, but that is technically
import()for a signer, not secure generation. So while there is arguably also a case for deterministic seed generation alone, I'd scope that out. Deterministic generators do not need random data - it just confuses the issue.