Because it is directly analogous. Neural nets (whether biological or artificial) are not the best way to execute lots of deterministic computations quickly and reliably. That's why we invented computers.

I'm not convinced at all that this is the best way to reduce latency; there are many other ways of doing that.

Having a calculator in our brains would be handy of course, but a gigahertz multi core computer is still going to be better at anything that needs to do a lot of computation and or a lot of data.