There is ample evidence to debate that CFN was part of the controlled opposition.
You appear to have a very strange definition of "evidence", and it leads to slanderous accusations on your part. What is your "evidence", since you present absolutely none in the rant that follows this statement?
Because he spent 14 years with Brother Natale? It was right around the time that he left when the Dimond Brothers started to move toward sedevacantism, so something had change. Bishpo Williamson spent decades with SSPX. Did he change or did the SSPX change? When there's a change, either on the person's part or the group's part, a departure under those conditions constitutes evidence of nothing.
For no reason at all you "firmly believe" Menzingern shut down CFN ... as if what they state as the reason isn't at all plausible. They're not wrong about the fact that printed publications simply cannot survive financially anymore ... and they were simply unable to adapt by figuring out ways to monetize the operation without suscribers paying a monthly fee to receive the publication.