Defunding MDN seems like an enormous strategic blunder on Mozilla's part. Its existence and popularity help ensure that developers are writing to the standard,

Defunding MDN seems like an enormous strategic blunder on Mozilla's part. Its existence and popularity help ensure that developers are writing to the standard, and not just Chrome's implementation of the standard. This is good for everybody, but in particular for Mozilla because it reduces the chance that people will write things that work on Chrome but not Firefox and then just call it a day.