Don’t be so sure. It’s truly impossible to predict and understand some of decisions Apple's made in the pro market.
Best one can hope for is to get an explanation 10 years from now in a podcast or blog post. If there’s still such a thing
Software that you build locally, or that you install with a package manager, is not affected.
The goal of Gatekeeper is to keep your Mac safe -- not to control what you can do on your Mac.
xattr -d com.apple.quarantine FILE