This is something that has frustrated me for years. There has been no interest in modernizing the Linux PRNG really ever. This article doesn't go into more depth so I don't know if it's just tacking on more entropy sources and algorithm support or a real modernization.

Windows, MacOS, every BSD, Solaris, etc. have moved past the (blocking) /dev/random vs /dev/urandom to more mathematically sound solutions. (Seriously, measuring entropy?) But Torvalds, Ts'o, etc. have blocked, belittled, or ignored any movement there.

It's crazy that the OS that runs all the things essentially has a roll-your-own-crypto PRNG at its core rather than relying on actual experts for that.

Unfortunately, it's "good enough" to not HAVE to change. Use /dev/random sparingly to seed your own PRNG, change your Java config to use /dev/urandom, or (shudder) use rngd to make it seed itself.

At least once a year I hit some COTS product that craps itself under load blocking on /dev/random on a VM, causing an outage. Yes, it's a "worked on my laptop" problem, but an unnecessary rake to leave out in the garden.