It's a sad occurrence for any couple, but it's also a private and personal experience for the couple and their families. Why an essay in the NYT from the two that keep harping about their privacy.
When Mike and Mia announced her miscarriage, it was a very brief statement. The essay seems to list again all of Meghan's grievances going back to the ITV interview. This essay comes nearly 5 mons. after the miscarriage and after the criticism they received for Remembrance Day, I look at as attempting to shame their critics.
A brief statement and asking for privacy would have been more effective.
I don't get the stigma part, women suffering a miscarriage receive messages of sympathy, sometimes stupid remarks, but they aren't stigmatized. I haven't many friends and co-workers I've known that have had miscarriages, it's sad and devastating, but none have ever expressed they feel stigmatized.