Well with bias, I don't think that's exactly the point. In fact, it is more like exposing the microcode engine directly to the programmer. The advantage is that you can readily add function blocks and therefore instructions without having to know about how the CPU works internally.
So regardless of if it is really "one instruction" or not, it could be useful for quickly building application-specific CPUs, or even building CPUs on the fly to best suit certain programs (which could be interesting for "big iron" running lots of CPUs to solve a big problem, for example).
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Well with bias, I don't think that's exactly the point. In fact, it is more like exposing the microcode engine directly to the programmer. The advantage is that you can readily add function blocks and therefore instructions without having to know about how the CPU works internally. So regardless of if it is really "one instruction" or not, it could be useful for quickly building application-specific CPUs, or even building CPUs on the fly to best suit certain programs (which could be interesting for "big iron" running lots of CPUs to solve a big problem, for example).