It's a good question but honestly, I read that as "they aren't getting what they want from their little temper tantrum." As in, the RF aren't backing down on the no money, no security, no titles earlier than laid out in the LP, and certainly no slap on the wrist for the press for the stories that Meghan doesn't like. Pretty much as "they were unproductive because we made no headway on getting our way."
Which does lead to my next question and that is, Meghan likes to throw around or at least have her friends throw around for her the threat that she has proof or receipts or can back up her claims. What about the RF? What if they have proof, too that Harry and Meghan are indeed trying the blackmail tactic to get what they want? Now, I realize that in no world prior now would the RF have ever gone after one of their own legally but frankly, they may not have a choice if this continues. At a certain point they're going to get completely fed up with the threat to hold something over their heads, blackmail them, etc. and it'll be time to put up or shut up and then what? Will they actually go after Harry and Meghan legally if those threats are actually being explicitly made? And, if I'm honest, I don't think I'd be particularly surprised if they are given that their level of desperation to stay in the headlines seems to have increased exponentially as of late.