[smitelli]

Some call this phenomenon the Goomba fallacy.

[waterhouse]

After about 5 minutes of reading, I'm proclaiming that its proper name shall be the "hivemind fallacy".

[frollogaston]

I'm just glad it has a funny name instead of something arrogant-sounding like "Dunning-Kruger effect." That was ok in a research setting but got turned into an insult.