I believe you when you say the coding would only take minutes, however it is still a task that would have to be addressed and the team is already drowning under urgently needed solutions to problems in the code as well as several improvements that are more important, since no alternate way of performing a needed function is available. In addition, it would require changes to the code for at least two pages - yes, very small and simple changes, however every time you make any change to existing code, it must be thoroughly tested and also documented, which would take a little more time than just the changes themselves.
In addition, the team would also need to address whether it is worth the additional resource loading to process the use of such a box. Granted, we're talking about a couple of milliseconds, but you need to multiply that by the number of uses of that box and also consider it in perspective of all the other processing that is being done. This can become significant for a website with the amount of traffic and activity that WikiTree has.