Who taught you sex is a drug? As long as words mean their definitions, it's categorically not. Plus it's probably kinda harmful to pile on the stigma already surrounding sex by conflating it with drugs and all the stigma that comes with that.

Hopefully I'm wrong, but it's kinda giving a nofap pseudoscience red flag to me.

Parents definitely should be teaching their kids about this stuff at the appropriate time, but they should stick to the facts.