Fortunately the human race has those who are not so easily put off.
Especially if they can get someone else to pay!
I remember Aerospace Developments and then Airship Industries making grossly exaggerated claims as to their abilities back in the 70s, ISTR it was ASW/ASUW then. No matter how many times they were told to go away they kept turning up like the proverbial bad penny.
If HAV only works in 'ideal' conditions and scenarios, what is the point of depleting ones limited financial resources on such a beast only to end up with fewer more capable platforms?