Yeah, I appreciate that, but if this becomes a general concern that npm can grant ownership to whoever it deems acceptable (even to the point of republishing existing versions), then could we start seeing e.g. WTFPL with npm exceptions style licence fragmentation.

The source could still be readily available to anyone to republish as they see fit, but only as a different name / version.

Not condoning it, just thinking that the original author surely has the right to do this if they plan ahead (judging by the npm backlash that has been building over a single entity holding all the keys some may be starting to think this way).