Miriam webster says: formal religious veneration : WORSHIP
2 : a system of religious beliefs and ritual; also : its body of adherents
3 : a religion regarded as unorthodox or spurious; also : its body of adherents
4 : a system for the cure of disease based on dogma set forth by its promulgator ealth cults>
5 a : great devotion to a person, idea, object, movement, or work (as a film or book); especially : such devotion regarded as a literary or
intellectual fad b : a usually small group of people characterized by such devotion
By the first definition all worship is a cult. I think that it is the use of the word today that has thrown bad light on the word.