The difference, from Nature's viewpoint, between analog and digital circuitry is what "mode" the transistors are operated in. In digital circuitry they are in "pulse" mode. But they can be in pulse mode in analog circuitry, too.
A lot of neurons seem to operate in pulse mode, but in this FM radio like way. This may be misleading some people.
But I think it is mostly the current intellectual structure, which rewards people for blathering fact-ignoring nonsense.