It is. Incels started doing it hoping it would make them honey enough to send out pheromones to the opposite sex. It ain't work and all of it is placebo. They just found some discipline in their life for once but doing it and magically they noticed benefits.
I've also seen people on here describe it like getting superpowers
"I haven't nutted in 18 weeks and my vision increased, I can smell colors, bench press PB went up by 60%"