Nothing to see here, move along. Key positions in social media companies filled with ex-spies and police is no different than a high-school chemistry teacher going to work for a glue manufacturer.
Evidence of editorial and policy decisions subtly favoring US government agendas? No, there will always be plausible deniability that someone willing to play as dumb as you will interpret as innocence and impartiality.
And if I may be more direct for a moment, perhaps other Americans will play along with your charade, but those of us in other countries won't be as willing to turn a blind eye to "ex" foreign (to us) intelligence agents meddling with communication platforms, just as you would not be so placid if it were ex-FSB agents instead of your people.
For those few deliberately obtuse souls that need evidence the fox may have ulterior motives for guarding the hen house:
In response to a 2017 request from the Pentagon, Twitter kept online a network of accounts that the U.S. military used to advance its interests in the Middle East, according to internal company emails that were made public on Tuesday by The Intercept, a nonprofit publication.