Germans sure liked over-sized but impractical weapons, didn’t they? How much time and money did they waste on the Gustav rail gun, for example.
They like to push the engineering envelope.
Time constraints, too many fronts and a mad man running the show meant all phases of testing were typically shortened or by-passed altogether.
"Hey boss...that weapon system your demanding isn't really practical. Not to mention, getting it in the field within the next x months" probably wasn't uttered too often.