This shows for certain that real prosecutors have been working.
Search warrants, which requires a US Attorney and a Grand Jury, were executed against Ali Watkins in February or earlier. Surveillance of Wolfe was underway prior to his December interview, possibly also from a Grand Jury (but possibly counter-intelligence).
This certainly indicates that the NY Times, CNN, NBC, and ABC at a minimum, were likely the subjects of wider surveillance and search.
Wolfe may have just opened the door to surveillance, but the surveillance itself has likely uncovered much more wrongdoing, and bigger fish by now.
and note how NYT didn’t fess up until the day of the indictment of Wolfe. guess they were hoping it wouldn’t happen.