Neither of your first two paragraphs are correct. I don&#x27;t have an opinion about the last.<p>First: while I don&#x27;t know what you mean by &quot;teasing out differences with respect to various oracles&quot;, the fact that you have a kernel CSPRNG that your system relies on means that diversity in CSPRNGs is a bad thing. Simply: alternatives to the LRNG lead to multiple single points of failure.<p>Entropy is not &quot;scarce&quot;. In fact, it&#x27;s infinite and renewable. To generate a practically unbounded number of random bytes from just 16 bytes of starting state entropy, just use those 16 bytes as an AES key, and use it to encrypt an incrementing counter.