Go a few levels of logic deep and all you’ve got left is noise.
Which you often don't need. Mechanical computers for aircraft operation, or hydraulic computers for modeling something nuclear, things like that.
But there's nothing "century-old" about all this. They might have non-deterministic steps for some calculation where determinism is not needed (like if you need to ray-trace a sphere, you'll do fine with a bit different dithering each time) and without it better performance is achievable.
The idea seems to make sense, just - it will never be revolutionary.