i get your point, but it's flawed in my opinion. you said:

"...it's not worth replacing one habit with another unless it is actually beneficial in this case, neither is beneficial."

yet in your previous reply you say:

"Vaping is obviously better there is no disputing that"

and for most people, exchanging one thing for something else that is better, is considered beneficial.

like, everyday, i'm going to punch you in the balls. would you prefer i punch you in the arm everyday instead? and obviously, it doesn't matter if you're not getting punched at all. but if you are getting punched everyday (e.g. you are still smoking) then it matters.