There maybe up to 1.5M ± 50% emacs users but they tend to clump in academia, around Dvorak keyboards, and rms. :]

By contrast, there are roughly 27M software developers in the world. Suppose 30-50% of them primarily use a vi-derived editor.

These factors and others make emacs a seemingly rare bird to spot in the wild when it's there.

Editors and tools, always use what improves the productivity of your team and you.