Beliefs along this vein will usually get along far better with Christians, though the fire part is weird.
Not really. They do not worship fire, any more than Christians worship wood when they pray in front of a cross.
To them, fire is the symbol of God. Considering that in the Bible, God appeared as a burning bush, led the Israelites as a pillar of fire, and in the New Testament we also see God appearing as fire, it's not so different from Christian views:
When the Day of Pentecost had fully come, they were all [a]with one accord in one place. 2 And suddenly there came a sound from heaven, as of a rushing mighty wind, and it filled the whole house where they were sitting. 3 Then there appeared to them [b]divided tongues, as of fire, and one sat upon each of them. 4 And they were all filled with the Holy Spirit and began to speak with other tongues, as the Spirit gave them utterance.
The First Amendment in action.
So long as they aren’t looking to kill those who don’t agree with them, I’m cool.