FPGA are WAY more flexible then a microcontroller is. You can literally just use your FPGA as a microcontroller if you want. Reprogramming them is not a chore

FPGA are WAY more flexible then a microcontroller is. You can literally just use your FPGA as a microcontroller if you want. Reprogramming them is not a chore at all anymore since you can write stuff for them at a much higher level of abstraction then you can for microcontrollers. Complexity only really starts once you start having issues with timing closure or are forced to implement an DDR SDRAM controller. This all heavily depends on the toolset you are using.