This is not the same as "sudo curl https://getsomefile.ro | bash". That is dangerous. While I understand your point, it's really not the same thing. This checks your system for its architecture and then downloads the correct binary to the directory you run it from. I know this because it's very easy to copy the URL, drop it in your browser and read the script. That's what I did before running it. And it is certainly safer than adding some random software repository which is what a lot of instructions suggest.