Delusions are typically associated with schizophrenia.
You, and others, are claiming things to be true that are false.
That is, in effect, a delusion. Is it schizophrenia? Since it is a group, it is more a psychogenic illness. It is the nature of man for followers to believe ideas they perceive to be associated the strong.
Technology has severely altered the ability of subservient humans to identify leaders, and the internet has made it worse.
It's interesting to me that this mass delusion about Primobolan seems to have manifest just the year after covid. Clearly, many elements of the Covid time period qualifies as a mass delusion. Perhaps the weight of the propaganda at that time made the natural subservient class of humans more susceptible to delusional beliefs out of a sense of belonging.
In effect, the isolation of covid reinforced the tendency to believe mass delusions.