I’m not sure what point you’re trying to make, exactly, but a use case for better non-CS generators has always been stochastic simulation, especially simulation/sampling approaches that are bound by the number and quality of uniform variates per second.

As someone who has spent considerable time working in these areas, I still appreciate advances.

> no real use case

Yes there is. Not every system has the need or the resources to maintain a secure random sequence. You may also want a reproducible pseudo-random sequence in generative code that logs the seeds. Because of the misguided attitude that nobody needs these features, everyone who does need them has to roll their own now.

I don't know about all that, but I use Marsaglias for generating noise samples in MCUs like Pico. It's the fastest option there is for such devices.