Go ahead and post it. It‘s a bit borderline, but using C code to solve an enduser problem isn‘t so much different from installing a tool via Homebrew.
Also, even if it gets closed (which I doubt) the post will remain and should even be able to get votes.
Unless we want to burninate the tag entirely, a second tag for zoom.app might help since the usage for this as an Accessibility feature seems to be the initial use in 2010. I’ve created zoom.app and fixed three posts that were tagged zoom but clearly mean the app.
I don’t think we want or need it for questions on optical or digital zoom on cameras. (But I ...