Together with the italicized remark I read that as “there is this unnamed platform that does not use RNG but just hashes bunch of arbitrary system parameters and state and calls the result random-enough”. In fact the unnamed OS does not do that and reality is significantly more complex and involves PRNG, but the official documantation for well-known and officially undocumented and unsupported internal get_random()-like API is worded in a way that implies that what it returns is simply MD5 of giant struct containing around hundred of assorted timers, counters and other system state.