I didn’t release the source yet but plan on doing so.
Still though why would you release and announce this before being ready to share the sources? You're telling people to run a shell script that not only fetches and installs a random, closed-source prebuilt binary, but also runs it automatically after fetching it.
Nobody in their right mind should be running this script or recommending it to anybody.
While I agree with you on the unsafe practices, let’s say this is closed source: what is different then? People download and run closed source apps all the time.