The Pied Piper strategy was to draw media attention to Trump, Cruz, and Carson in order to force the mainstream candidates like Bush and Walker to comment on issues they'd prefer not to. It was not to get Trump nominated, which you can tell from the plain text of the email. In any case, the strategy was almost immediately obsolete, because Trump was the frontrunner from the moment he went down that escalator.
You seem to be suggesting that the media undermined DeSantis in 2023-2024 in order to assist "the left" in winning the election. The problem with this is twofold: first, media outlets that nobody would accuse of sympathy with the left (Fox News, the New York Post, etc.) were no friendlier to DeSantis; second, mainstream media outlets continued to treat Trump favorably after he won the nomination (for instance, uncritically accepting his false claims that he had nothing to do with Project 2025).
You seem to be suggesting that the media undermined DeSantis in 2023-2024 in order to assist "the left" in winning the election. The problem with this is twofold: first, media outlets that nobody would accuse of sympathy with the left (Fox News, the New York Post, etc.) were no friendlier to DeSantis; second, mainstream media outlets continued to treat Trump favorably after he won the nomination (for instance, uncritically accepting his false claims that he had nothing to do with Project 2025).