No one cares that they employ UK companies to teach their aerospace firms how to build better products. Why should they care about this? Being a better pilot doesn't really mean much in a crap aircraft as far as tactics are concerned.
The more important questions are, as it's been going on for some time (I remember a rumour here about french aircrew working for the Chinese - as well as Israel cooperation) why now, and who did it? First I saw was Deborah Haynes thread on Twitter late last night.