They do this with the knowledge that most people won't stand up against them out of fear, even though they don't agree with them - the sociopathic Google walkout organizers leveraged this to great effect when they collected signatures and then changed the text of what people had already signed to be a psychotic list of unreasonable demands, knowing that it'd be career suicide for any of us to complain publicly about it (there wasn't much public noise but a lot of us were really pissed about that privately). Surprise, surprise, the overlap between that group and the group later pushing for unionization was nearly 100%.
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.