[mopierotti]

This is my first time seeing this one mentioned, but I'm curious, what makes something a "real" fallacy?

It seems like it's a real mistake that people make. I guess one could categorize it as a more specific case of misunderstanding a distribution of values. (In the same vein as mean vs median, outlier skewing, assuming unimodal vs bimodal distribution, etc.)

[necheffa]

The "realness" is determined by the signal to noise ratio. In this case I find mostly joke sites, memes, and sites trying to sell a political/social agenda using it.