A few reactions.
First, no one should judge the interview based on the news reports. You should watch it yourself, because Favre says a lot more than what the news stories are reporting.
Second, as always, Favre is a compelling personality.
Third, Favre made it clear that the Packers are trying to force him to retire. They do not want him to play for anyone. They do not want him to play for Green Bay because the franchise has moved on. They do not want Favre to play for anyone else either, because they don't want Brett to tarnish his legacy, or beat the Packers in a game, or embarass them by outplaying Rodgers.
Fourth, everyone has been spewing their venom at Thompson when Favre made it clear that McCarthy is just as culpable. According to Favre, McCarthy clearly was upset when Favre told him on June 20 that he was seriously thinking of coming back, and it was McCarthy, not Thompson, who told Favre that playing for the Packers was not an option, and that playing for anyone else was not an option. McCarthy said this without first consulting Thompson. You can't blame Thompson without also blaming McCarthy.
Fifth, more is coming tomorrow night. Favre is not finished telling his side of the story.
Sixth, giving the interview to Greta actually makes sense. Greta is close to Deanna. Greta, unlike a Peter King or Chris Mortensen, has no football agenda in talking with Favre. And, perhaps most importantly, Greta works for Fox, which is the network that has the rights to the NFC. Fox is sure to benefit from a Favre return, and Fox has a much larger viewership than ESPN. Favre was smart to go to the mainstream media, rather than the sports media.
Finally, everyone on this forum is making such a big deal about Favre supposedly flip-flopping in late March or early April. Keep this in mind, Thompson chose his words very carefully. And the reports did not say that Favre told the team he wanted to play. What Thompson said is that Campen reported to Thompson and McCarthy that Favre was thinking about playing. Thompson and McCarthy started making arrangements to go see Favre, not to officially welcome him back, but to discuss how a possible comeback might work. Before they made the trip, Favre told them he was staying retired. That is not the gross flip/flop that many people are making it out to be. (And in case anyone is now inclined to jump on me for saying this, go back and read the quotes from Thompson or any other Packers official carefully, without regard to any gloss or spin the reporter is providing in writing the story, and without embellishing the quotes yourself. There was smoke about a possible comeback, but no fire.)