This idea that it is a recent invention isn't really supported by the reality on the ground. Things like the satanic panic, Dungeons & Dragons / Metal being satanic, Rock being evil, and a host of other things have long been used to remove "undesirable" people for a long time before 2014 on both the local and national level.
The extremes have always used shunning and economic warfare tactics to shut up those who disagree with them.
The DnD panic was about kids. It was about kids. I find it absurd to go after DnD like that but I don't recall ever reading about people being shunned, losing there jobs etc as happens these days.
People have, for many many centuries use various shunning tactics to enforce their will upon others.