Jason’s prediction was that mainstream media would “block” RFK Jr. “at every angle” and systematically hinder his exposure across all major channels.

Evidence does show hostile and sometimes gatekeeping treatment:

• In the very podcast episode, Jason says “the media is going to block this guy at every angle” while discussing a “media industrial complex” that wouldn’t let Kennedy’s anti‑establishment message spread. (podscripts.co)
• ABC News did a high‑profile interview with Kennedy in April 2023 but cut out large portions of his COVID‑vaccine comments and told viewers they had used “editorial judgment” because he made “false claims,” explicitly framing him as a major source of anti‑vaccine misinformation. (justthenews.com)
• Vanity Fair noted that his first national NewsNation town hall in June 2023 received “little to no press” from mainstream outlets such as CNN, CBS, MSNBC, the New York Times, the Washington Post, and the Wall Street Journal, which gave it zero online coverage. (vanityfair.com)
• CNN’s Jake Tapper publicly said he would not host a CNN town hall with Kennedy because he “spreads dangerous misinformation about childhood vaccines.” (vanityfair.com)
• CNN excluded Kennedy from its June 2024 Biden–Trump debate; he and his campaign alleged a conspiracy, but CNN’s stated criteria were neutral (ballot access for 270 electoral votes and at least 15% in four national polls), which he failed to meet. (theguardian.com)

However, the stronger claim—that the mainstream media systematically blocked his exposure “across all major channels”—is contradicted by extensive, ongoing coverage and platforming:

• Major outlets repeatedly interviewed and featured him. CBS News ran multiple interviews and segments about his campaign and its impact, treating him as a real (if controversial) player in 2024. (cbsnews.com)
• Fox News and Fox Business, both mainstream national channels, regularly hosted Kennedy and gave him friendly or at least substantial airtime; Kennedy himself said he was being “slammed” by corporate media even while appearing on Fox platforms. (theguardian.com)
• Prominent legacy outlets, including The New York Times, The Guardian, TIME, and others ran repeated features and news stories on his campaign, health history (e.g., the brain‑worm story), and controversies, as well as analyses of his voter appeal and spoiler effect. (theguardian.com)
• PolitiFact named his presidential bid the 2023 “Lie of the Year” for its constellation of conspiracy theories—highly negative but high‑visibility coverage that undercuts the idea he was ignored or silenced. (en.wikipedia.org)
• His campaign and message also reached tens of millions through high‑profile moments like a nationally discussed Super Bowl ad run by his super PAC and a widely watched “independent response” to the 2024 State of the Union, which amassed over 25 million views in 48 hours across major platforms. (en.wikipedia.org)

Overall, mainstream outlets were often adversarial and sometimes restrictive, especially around vaccine claims, and some events were under‑covered. But Kennedy still received substantial, recurring exposure on major TV networks, in leading newspapers and magazines, and via widely discussed national moments. Given that level of coverage, the specific prediction that the mainstream media would “block this guy at every angle” and shut him out “across all major channels” is overstated and does not match what actually happened.

Therefore, the prediction is wrong.