This stuff might have been great 50 years ago but today it is way beyond obsolete. Its 50% or 60% efficiency competes with stuff that is 90% efficient with still much less in the way of complexity and cost.
That's entirely correct, thanks.
It just blows my mind that anyone could
actually believe that any future development of fuel cells could ever possibly compete with
BEV tech for any type of widespread transportation needs. Even if the cost of hydrogen fuel could somehow be reduced significantly (using magic?

), there's no way around the basic physical/chemical limitations on efficiency when oxidizing fuel (the same process as burning fuel, but slower) to produce power. That process is subject to Carnot limitations on efficiency, which electric motors are not.
Anyone who says that fuel cell cars can or even might be able to compete, economically, with BEVs, is either woefully ignorant of basic physics, or else they know what they are claiming isn't true, and they're just shilling for Big Oil.
Now, that's not to say that there can't be any interesting developments in fuel cell tech. That does have some interesting niche applications, where economics and efficiency have low priority. But to suggest we'll ever see large numbers of mass produced fool cell cars running on public roads... that is not merely unlikely, it's flatly impossible.