Something that I just realize today is how rare Zoroastrian mages should be. Like, to the point where I wonder why the tradition was included in Street Grimoire. According to the source here, the global population of Zoroastrians in the Fifth World is at most 190,000. That number probably hasn't changed much given that Zoroastrians don't accept converts, and VITAS an the Awakening probably cost them as many people as population growth gave them. Assuming a 1% rate of magical talent, that puts the global population of Zoroastrian mages at 19,000. That's the population of a small town in Kentucky. Meanwhile, that number of Awakened likely live in any medium sized sprawl.
Did Zoroastrians start accepting converts? Because a good reaction to the Awakening (or a prophecy that was on point enough to have "predicted" it) combined with accepting new recruits could easily put the global population in the tens of millions.