"IG is a drug"
This is not just pseudo-science. It's literally a false statement. Maybe it's a metaphor but science is not a metaphor. Metaphor's are generally a bad foundation for actions based on reality.
It's ok if people want to compare "social media" to a drug, but there's any meaningful evidence for those claims either so that's pseudo-science too. Notice how all the arguments against "social media" here are based on feelings, stories, etc. while there's zero scientific evidence.