"Everybody knows...." This is really outrageous rhetoric

[SouthBayDem]

16. The classic bandwagon fallacy

The bandwagon fallacy, also known as the appeal to the masses or appeal to common belief fallacy, is the logical fallacy of claiming that something is true because everyone believes it. Whether that belief is actually true or not doesn’t matter—if an arguer claims that a position is true because it’s popular, the arguer is using the bandwagon fallacy.

(Grammarly)

The thankfully former Rep. Marjorie Taylor Greene had a famous example when she advocated for a national divorce on grounds that everyone she knows supported it: “We need to separate by red states and blue states and shrink the federal government. Everyone I talk to says this.”