I think the post birth photo op expectation is unreasonable and unfair.
Why can't the release of a few photos be enough?
One more time - the discussion is not over "is it a good tradition or not", that was beaten over to death when Archie was born. What is interesting now, is that after a pretty clear statement from their comms team that they want to keep the birth private and do all of the public things after having some time to celebrate as a family, Meghan is now claiming that simply they "were not asked to" do that.
If you add it to the (growing) list of lies in the Oprah interview... Well, the irony is, we're finally getting an honest picture of Harry and Meghan.
I think everyone's circumstances have been different. George VI tragically dying in his mid-50s meant that neither the Queen nor Prince Charles had that opportunity for time out, other than the short period that the Queen spent in Malta. William and Kate moved in together in their early 20s. By the time Harry met Meghan, he was into his 30s, and he'd left the Army, and he already had a high public profile. He'd done solo tour abroad long before they got engaged. It might well have worked out better if he and Meghan had had that time out, before doing full-on Royal duties, but I can see why it might not have seemed like such an easy option for them - he'd have been stepping back from a role he was already in.
I don't think one can compare their situation to this of William and Catherine. They were young - still at univeristy, and while William did some things, he was not an active, working royal as Harry was, when the relationship began. So here the comparison between brothers is not working.
But they had the experience on how to do that - somehow - with Camilla and Charles. Just introduce Meghan slowly, do a couple of things, let her know how the work looks like, what is expected, and so on. She didn't need to hit the ground running or be on (almost) Harry's level from the start. And then increase the workload after she's accustomed to the job - if that could ever happen, I guess.
I think the theory presented in the article is somewhat true - Meghan got back to what she knows from her previous life, and she feels that they need to be out there. (But I think it was also born out of a desperate need to tell the world how awful their life was, so partially that).
Can you imagine Michele Obama airing her family's dirty laundry on CBS like that? Or Amal Clooney saying how she was mistreated by her in-laws because of her ethnicity?
While the interview was a mistake - if they really want to shoot for that Clooney/Obama type of fame - I think the biggest mistake was allowing King to tell on national television that Harry talked with Charles and William. Now everyone - BRF, celebrities - will be wary of what is said in a conversation with the Sussexes, knowing that they can be used for "getting their names out there" in 0.2 seconds with one phone call.