Merriam Webster definition of a cult
1
: a religion regarded as unorthodox or spurious (see
SPURIOUS sense 2)also
: its body of adherents the voodoo culta satanic cult
2a
: great devotion to a person, idea, object, movement, or work (such as a film or book)criticizing how the media promotes the cult of celebrity especially
: such devotion regarded as a literary or intellectual fad
b
: the object of such devotion
c
: a usually small group of people characterized by such devotion the singer's cult of fansThe film has a cult following.
3
: a system of religious beliefs and ritual also
: its body of adherents the cult of Apollo
4
: formal religious
veneration : WORSHIP
5: a system for the cure of disease based on dogma set forth by its promulgator
Clearly the fifth definition is perfectly appropriate to use for vaxxers and anti vaxxers. Stop pretending you define terms and instead try reading a dictionary before correcting others.