Effectively yes; the fuelcell itself is less complicated than ICE (well, probably not today, but it feels like that's an issue of one having been mass produced

Effectively yes; the fuelcell itself is less complicated than ICE (well, probably not today, but it feels like that's an issue of one having been mass produced in incredulous quantities for a century and the other just barely out of the labs), but they both just make a disk rotate, effectively.