They’re more likely using “wakefulness promoting agents” like modafinil and armodafinil (Provogil/Nuvigil respectively, or probably some better shit in the same class) which are actually kind of amazing and I have zero issue with them taking it.
Non-euphoric, and as far as I’m aware, not physically habit forming; it just keeps you awake and alert, I don’t know how else to describe it. Essentially none of the side effects (pleasurable or not) of traditional stimulants. After about 8-10 hours you sleep pretty ok.
I’m really not sure why these drugs haven’t become more popular over the last decade or two… Probably the whole “not habit forming” thing.
I’ve got a stash that I’ve had in a drawer for 5+ years and I’ll take one like three times a year or something as needed.