Neither does it confirm it (or give a source).

I mean yes, technology was "stolen" all the time - from BOTH sides. F-117 stealth technology is based on research done in USSR. In 80ties, the US people happily took a ride in the first MiG-29s delivered to us in the 1980s and "stole" technology from there.

And yet, we don't go running around claiming that all USA flight technology achievements are based on CIA agents stealing tech and thus diminishing everything people Lockheed etc. did.

If you actually look at declassified primary sources you'll see that a huge amount of effort went into eastern designs as well and the impact of "stolen" technology is actually rather limited due to the differences in approaches of R&D teams.