If they had a proper control screening for the ad, the backlash could be anticipated, as shown by the fact on how the simple act of reversing it would have a much different message/effect.
People are mad at a culture and economy that is increasingly dehumanizing and exploitative, where they feel hopeless when contemplating basic things like ever having a permanent home for their family, and when every interaction with modern commerce seems to be designed to trick them or steal from them.
Since they feel (and to some extent, are) powerless to affect the forces acting on them directly, they lash out at anything that reminds them of this dynamic, in whatever forum will listen to them.
Facebook, Google, etc. would all disappear if what you said were true. Politicians would be voted out, etc.
The truth is, people don't mind being dehumanised if it can make them feel more like their neighbours, or even better, above them. We're all too lazy to care about being dehumanised, like pigs to slaughter.
People lash out not because they feel helpless, but because they feel superior. They're not, they're just bored and life has been good so things they invent to get upset about look extremely bad to them.
The lack of empathy is astounding...
Tho the article has some interesting ideas and historical insights.
Hardship keeps people busy, boredom forces people into drama.
Culture warriors inciting violence against popular culture https://pophistorydig.com/topics/burn-the-beatles-1966/
Or, you know, literally anything from the Children's Crusade to the War of Jenkin's Ear. Raising a rabble to violence has been going on forever.