I'd never heard of the stub ejector either.
That might very well be it.
It hit me, what doesn't seem right about the lamp base ?
The idea of a threaded hollow tube seemed like a normal way of running the wires.
Then it struck me ... how does the wire GET to the tube ?
The bottom has a few tiny nicks, but they don't appear to be manufactured openings.
They look like small corrosion nicks ?
When the base sits flat, like on a table or the floor, are any of those nicks large enough to allow the wire to enter ?
I think I want to change my vote to "candle stub ejector" because it seems like a cool idea.
Edit: Another foot piece attached at the bottom, as suggested, would solve the problem, ... so I'm wavering on this one ... candle stub ejector is just too cool, though.