deinfluence

verb3

1. •
   To post material that encourages people to consume less, as the opposite of an influencer.
2. •
   To post material that draws attention to the downsides of a particular product or service and may recommend alternatives.
3. •
   (rare) To free from an influence.

   • […] Rube Goldberg devices by which we could lose friends and deinfluence people […] — 1948