Why can’t you implement support of feature X?
The decision to support or not to support a particular feature is mostly from the subjective view of ours.
Every product has its own advantageous and disadvantageous market competitive edges. We choose to implement some features because we evaluate the value added is worth the development cost. Likewise, we choose not to implement some features because we evaluate the value added is not enough to support the continuous development cost of such features.
Since this is a matter of subjective view, there is no point to further debate what is worthwhile and what is not.