Munchausen requires the person isn't doing it for some kind of personal gain in the DSM - which social media credit and clout could be classified as.

> In either case, the perpetrator's motive is to perpetrate factitious disorders, either as a patient or by proxy as a caregiver, in order to attain (for themselves or for another) a patient's role. Malingering differs fundamentally from factitious disorders in that the malingerer simulates illness intending to obtain a material benefit or avoid an obligation or responsibility

Personally, I would not consider clout in mental health communities to be 'material benefit'