I noticed that there is no oversampling option within the Adaptive Limiter (which I am used to seeing on all other "mastering-type" limiters), but I did read about the "16x oversampled interpolation mechanism" referenced in the eZine. 
 
Is this saying that the Adaptive Limiter is using 16x oversampling by default??? 
 
Furthermore, does that also mean there would be no benefit of using "Upsample on Render" option with this plug?

There are two potential reasons to oversample with a limiter:
 
1. To detect intersample peaks where the peak of a digital waveform after reconstruction (or some types of processing) is higher than the sample values.
 
2. To reduce aliasing that can occur from the distortion created (especially) by aggressive limiting.
 
The eZine references #1. 
 
I would suggest using your ears for #2 by choosing a plugin/settings that sound good and not worry about the technical details. For modern plugins, the programmers will almost always upsample an appropriate amount if it's beneficial (or offer the option) - after all they want their plugins to sound as good as they can and the CPU hit from upsampling isn't remotely as relevant today as it used to be.

Thanks for the response @drewfx1