Sure it was risky for US government & CIA to use untested technology to get a sub out of ocean floor at insane timeframe from only one company who could do it or mission may not be successful. US navy say no way. Soviet Union didn't even to a rescue mission.
However, the potential intelligence was too irresistible. How the submarine was made. See an actual nuclear warhead (Soviet used dummy warhead in tests to save money). How nuclear torpedo worked. Did the crew inadvertently left any intelligence nuggets (oh, yes). What types of isotopes within ballistic missiles. How cryptography gear were made & read. In theory NSA could read all the chatter.
Soviet Union lost a massive face because they were fooled for five years by CIA despite having access to naval cables thanks to one traitorous John Walker.
CIA biggest problem was settling wrongful death from alcohol fueled party & one persistent investigative reporter on sniffing at "deep sea mining" cover story.
Yes, event caused CIA to start saying "we cannot confirm or deny"
How the Soviet Navy treated the widows & families on their deceased naval crew was shameful & a huge black mark.
Funny how Detente forced both sides to stay quiet until end of cold war...
Not totally surprised US Navy covertly killed Matador (second attempt to get rest of submarine) by alleged leak to media because Navy brass saw how CIA took over A-12 program from the air-force or that CIA taking over their turf.