It might also be a form of "guilt by association"; that is, a df'd individual may still believe it is "the truth" but just be going through a defiant phase of giving in to their particular "vice" but harbor intentions of going back "soon". Then along comes another df'd individual who is smiling and glad to be out and who has absolutely no intention of going back and thinks it's bullsh*t.
I guess the latter df'd individual would scare off any "right thinking" df'd individual who "intends going back.
Makes some kind of screwy logic.