"so flash-based FPGAs can have a couple orders of magnitude advantage in static power over even the thriftiest of SRAM-based devices."

There's that nomenclature problem....

This writer is utilizing the term "static power" with regard to the flash. The flash is static for sure, however, static power  is more referred to SRAM and it's non capacitor based matrix in comparison to DRAM,SDRAM.

doni