Gary Goldsmith, who is the brother of Kate’s mother Carole Middleton, slammed the royals in a Facebook post.
The online rant appeared in response to Meghan and Harry’s recent Evening Standard interview.
Filmed via Zoom at their new LA mansion, the pair discussed Black History Month, with Harry admitting to having white privilege.
In response, Gary posted: “With so much stuff going on in the world, still these two muppets are craving attention. Please shut the F up and bring up their child and stop talking, let alone demanding.”
Gary also directed specific comments to his niece’s brother and sister-in-law.
“Harry you have lost our love and respect. Meghan, you are a wrong’n,” Gary wrote.
The post has since been deleted.
Gary’s comments came after it was reported Sophie Wessex, 55, had stepped up into a leadership role – and become close with the Duchess of Cambridge, 38.
“Kate is truly grateful to Sophie for stepping up – she’s a calm yet glamorous pair of hands to help Kate out with attending public engagements,” a source revealed.
And Sophie’s transition to becoming a more visible and active royal family member couldn’t have come at a better time for the Duchess.
“Kate was feeling a bit overwhelmed at the task of being the female face of the younger generation and Sophie has breezed right in,” the insider added.