I suppose it is a matter of assessment what 'worship' means but yes that is an oversimplistic label. I believe in their alchemical view it was a divine force, responsible for all transformation internal and external. So yeah, of course there was more involved, but fire as an object of transformation and purification was definitely a crux of the philosophy.
However, it is more known as a great system of duality with a 'good God' and an 'evil God' (more like order and chaos than good and evil, they are truth and deception) and the balance that plays out between them. The action of 'fire' in this purification was seen as bringing one closer to the good god, Ahura Mazda.
This seems to be more about light than the fire itself though, as Zoroastrians always pray towards a source of light. However, there is the idea of the 'inner 'fire' which is the spirit and representing one's own light.
However, it is more known as a great system of duality with a 'good God' and an 'evil God' (more like order and chaos than good and evil, they are truth and deception) and the balance that plays out between them. The action of 'fire' in this purification was seen as bringing one closer to the good god, Ahura Mazda.
This seems to be more about light than the fire itself though, as Zoroastrians always pray towards a source of light. However, there is the idea of the 'inner 'fire' which is the spirit and representing one's own light.