It was deemed plausible, not confirmed. In either event, this film was made in 1964 and featured:
A man who's thrown hat can decapitate you
A laser that can chop your balls off (in 1964)
A radioactive bomb that will irradiate gold, supposedly cornering the market
A aerosol chemical that knocks you out, then disperses safely
Bond successfully seduces a lesbian
A gadget-laced car, many features of which Mythbusters "Busted"
Well, I'll accept that it's plausible by movie logic and compared to all that other stuff. But that's a pretty relative statement.