Most people aren't going to have npm installed though. Nobody outside of web devs uses it.

A lot of people who are not web devs use it, that's what I see. I even saw some mainframe developers use npx to call some tool on some data dump.

Also, this is a web project anyway. Google Workspace is web based, so while there is a good chance that the users aren't web developers, it's a better chance that they have npm than anything else.

In the case that they don't, releases can be downloaded directly too: https://github.com/googleworkspace/cli/releases

"Most people" are webdevs

Bracing for getting cancelled

If you had to pick one package manager that was most likely installed across all the different user machines in the world, I'd say npm is a pretty good bet.