Well, the only way "those kids" don't get HRHs (they already have titles, just not HRHs) is bia Letters Patent, issued either by the Queen or, when he comes King, by Charles.
So far, Zamorah the Gypsy Fortune-Teller, those LPs are a no-show.
It is clear as your crystal ball that HM isn't going to do it.
That leaves Grandad, who, at a minimum will be a cursed of penalising his innocent grandchildren for their parents' sins. And, at a maximu, confer viability on the most famous of Meghan's assertions on the now infamous Oprah interview: the famiky are just a bunch of white colonialists.
Lots of people, I agree won't care f.a. eirher wzy.
But you're the delusional one if you haven't been following events in Britain, with statues being pulled down, calls for decolonising not only literature curricula, but questioning whether the sciences are inherently racist, and a Caninet minister was recently chased off a university campus by a mob screaming Tory Scum" because he had the hall to state that a woman was an adult female (and said Minister for Education is Brown)
. . . And you really think that Charles de-royalling the only mixed race children within 6-7 places in the line isnt going to set off a storm of accusations?
It would be an early Christmas gift to Meghan, Omid Scobie, and the emotionally damaged and somewhat dangerous cult that worships Meghan.
The Queen didn't take Harry's title for. Very good reasons. She has proved to be savvier than all the dogs baying for justice.
The smart money shrugs, renders the people with the titles irrelevant, and, thus, their titles, as well.
What no one really cares about is two invisible kids being raised as Americans 5,000 miles away carrying HRHs.
Hopefully, Charles will have learnt something from his Mum's brilliant handling of the Sussexes attempts to undermine the monarchy.
If he hasn't, he isn't fit for purpose.