Some editors are this way and others that way.
My suggestion and reason is:
When editing some (non-standard) docs in TSV or Space-SV view, I need to edit the tab/space as a delimiter to adjust the view. Oftentimes the delimiter could be quite wide so that I have to scroll. And they are here and there. D-clicking would be more convenient.
Though currently when necessary I can enable tab/space as a Marker and use the mouse event to select it, I still hope d-clicking can be used (always, or as an option).