You should trust software that you can verify yourself as safe, or software written by people who you trust not to abuse the power you're giving them over your device by allowing them to modify it.

Personally, I don't trust most popular software either, but its easy to see why people would be fooled into thinking that software written by a major corporation used by millions of people might be more trustworthy than a script uploaded by a random anonymous person who couldn't be held accountable if their software infested your system with malware.

I agree. But I'm just surprised that you'd be extremely wary of running a sub 100 line open source script as a one time operation that you can easily audit yourself but on the other hand are likely using a browser that no one in the world (not even the developers) has fully audited.