Most of companies don't even know that node js npm packages has build scripts which do rely on python c++ build tools. That's y. This saves lots of time. Also binaries once checked and published cannot be edited in npm / all we can do is just remove that version fully if below 300 downloads.

Any developers worth their salt has build scripts turned off everywhere at this point, and manually build the packages they need it for, or manually whitelisted. It may save time, but as others mentioned, shipping binary blobs in a opaque way is a great way of making people avoid your project.