Elton John has cut ties with Prince Harry. In fact, John has spoken out in support of Harry and Meghan Markle on several occasions.
In 2020, John defended Harry and Meghan against criticism after they announced their decision to step back from their royal duties. John said that he understood why Harry and Meghan wanted to leave the royal family, and that he supported their decision.
In 2021, John spoke out against the British tabloids for their treatment of Harry and Meghan. John said that the tabloids were "bullying" Harry and Meghan, and that he was "sickened" by their behavior.
In 2022, John attended the premiere of Harry and Meghan's docuseries, "Harry & Meghan: A Royal Love Story." John said that he was "proud" of Harry and Meghan, and that he supported their work.
It is important to note that John has not made any public statements about Harry and Meghan since they gave their interview to Oprah Winfrey in 2021. It is possible that John is simply not interested in discussing Harry and Meghan, and that he did not attend their docuseries premiere for that reason.
Ultimately, there is no evidence to suggest that Elton John has cut ties with Prince Harry. The claim that he has done so appears to be based on speculation and conjecture.