Here is their own explanation:
One challenge, though, is that our published announcements are culled from the couples who submit their wedding to us through the online form. We would love to see more economic diversity and a broader range of careers represented. The biggest step in that direction would be for more readers to submit announcements, giving us a wider and deeper pool of candidates. Recently, we had a push for a more racially diverse submissions, and it has helped create a more inclusive section.
Every submission is read and seriously considered. Some weeks, we’ll have 125 to 200 submissions; other weeks we’ll have 20. It can be agonizing to pare down to only 35 couples during the heavy wedding season. (If you want to really increase your odds of getting in, try a Christmas week wedding.)
And, yes, choosing our couples is subjective. Factors, in no particular order, include life achievements, job information, how-we-met stories, ages of couple, college backgrounds or not, parents’ information and other interesting anecdotes. We also strive to have as diverse a selection as we can, based on the submissions for any particular week.
While I consider that a perfectly fair response, I wonder how an NYT labor market story would evaluate a comparable response from say a top tech company in Silicon Valley.