Does it, though? That's only in relation to that one drug, EA-3167. DMHP and CAR-226,086 were also designed as a part of that program and I wouldn't be afraid to take them today.
The fact that they were designed as chemical warfare agents is a moot point if you try to say that somehow makes them worse drugs. This project was specifically aimed at designing non-lethal incapacitating agents. It was a government-sanctioned project to make mind-altering drugs that were super intense, extremely long-lasting, and safe to ingest in large doses.
DMHP in a close analogue of THC, that took around two thousand doses to kill the test animals. When given to volunteer soldiers it made some of them high for days from one dose, and the commonly described effects included things like munchies and head rushes. Sounds great to me, I'm curious if smoked it could be like a good high that lasts most of a day.
CAR-226,086 is a deliriant, but it has the highest central to peripheral effects ratio of all of those they tested, even more so than EA-3443 which is reported to be able to produce deliriant hallucinations and confusions without significant physical symptoms. In other words, this is a deliriant without a body load. That sounds absolutely fascinating to me, and like an incredibly novel experience.
EA-3167 should have a deliriant body load, but interests me only because it's apparently the longest-lasting hallucinogen known to man, being claimed to have plunged volunteers into delirium peaking for an insane five to ten days. They probably developed schizophrenia because their minds were ripped to shreads in the process, at least that'd be my best guess. People who use deliriants too regularly tend to develop problems regardless of which they are, which is why I don't use them anymore and would only try CAR-226,086 probably a few times. Still, I've always wanted to have a trip that crazy if the time was right, and I'd gladly do it if I had nothing left to lose. Otherwise I'd probably just hold on to it as a trophy until the right moment came.
In the end, they're just a group of drugs like any others, with pros and cons compared to one another. No reason to discount a psychoactive chemical just because it was originally investigated for warfare.