Yes - I think so.
We’ve all speculated on here that a slimmed down monarchy would be more easily achieved if the ‘senior’ titles were reserved for the line of the heir only - so in the future only George’s children get Prince/Princess titles, and so Charlotte and Louis’s kids would be styled like Edward’s kids Lord/Lady etc, unless George didn’t have kids and Charlotte became heir then her kids could be bumped up a title at that point.
What Meghan appears to be saying there is that the royal family have been having this same discussion too and had thought about changing the convention for grandchildren of the monarch before the Queen died. Her opinion seems to have been that it would look racist to do that to the first mixed race grandchild.
I’m sure Charles had been thinking about this long before Meghan was on the scene - if Harry had married Chelsey or Cressida it might have gone through because it wouldn’t have led to the speculation that it was done just because Meghan wasn’t white.
The problem with the Oprah interview was the muddled and odd way Meghan kept conflating different things and Oprah kept interrupting with her exaggerated exclamations. She threw in that they’d also said Archie wouldn’t get security because he wasn’t going to be a prince.
Which can’t be true because all sorts of people who aren’t even Royal get paid security if there’s deemed to be a need for it by the intel available.
I’m imagining the conversation about security was more along the lines of as your children grow up and drop down the line of succession like Edward’s kids, like Princess Margaret’s kids etc, there’s not probably not going to be the need for 24 hour security.
Princess Beatrice and Eugenie lost their police protection in 2011 when they were 5th and 6th in line to the throne.