FPGAs are legacy baggage in the same way that GPGPUs are.
I hoped the author would expand on this point.
It is also my impression that GPGPU are just "a hack": they should had been normal coprocessors to the main CPU, just like the FPU and the vector units are. It seems that now we are finally reaching that model (in Linux the graphics device is almost completely separated from the computational device, although they are on the same physical device most of the time) but we are still far from the "Comprocessor extension" opcode space of MIPS processors or to the "brain and arms" of CELL (1 generic CPU, many specialized coprocessors).
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I hoped the author would expand on this point.
It is also my impression that GPGPU are just "a hack": they should had been normal coprocessors to the main CPU, just like the FPU and the vector units are. It seems that now we are finally reaching that model (in Linux the graphics device is almost completely separated from the computational device, although they are on the same physical device most of the time) but we are still far from the "Comprocessor extension" opcode space of MIPS processors or to the "brain and arms" of CELL (1 generic CPU, many specialized coprocessors).