That's an op-ed, not a news article. It's not written by a NYTimes journalist and does not reflect the stance of the NYTimes in any way.
It's literally just the opinion of a single person, which is why it says 'Opinon' at the very top, in this case that person is Afua Hirs.
It does not matter if its not their opinion. Its on their platform and they are aware of it but because they know that such sentimental article would generate interest from every quarters thereby increasing their own visits and clicks, it does not matter and its enough for them to hide under the disclaimer that they are not responsible for the opinions of their users. NYTs website is not a forum that they are likely to be absolved from such irresponsibility.
When the news broke, I know its just a matter of time before some reacted to it and begin to make some conjectures all over the place. The problem is not even about the Prince and Meghan but the number of people that would not allow those innocent people to lead their lives in peace without connoting some emotions and thereby increasing emotions here and there.