Those numbers are for desktop game sales, not people who might want to play your game in their browser.
Being unable to load up a browser game on macOS is a pretty big deal when the main upside of a browser compile target is portability and accessibility.
Yeah but if it works on Windows, who cares about the tiny tiny tiny vanishing percentage of Mac users? I would prefer Godot concentrate on implementing missing features and improvements rather than trying to support the tiny number of MacOS gamers who want to use a browser.
The market share for Mac gamers must be very, very low. Like under 1%-low?