So it isn't roughly zero, and this minority is what's being discussed here.

No, but if you're trying to argue that sleep therapy would be more effective for this group than non-stimulant form of medication, you need to prove this.

Sleepy therapy (CBT-I) may be the best supported treatment for insomnia, but it's still quite shit. ~50% of people will see little to no improvement after going through therapy.

I'm not arguing anything, I'm questioning