I get what they mean -- it has definitely gained a foothold in the tool/utility world thanks to easy cross-compilation and single-binary output. Given their target, I definitely understand why they would put it in that group.
Our users requested it, so we build it. We use scripts where we could just say "code" or "serverless functions".
Yes, just create a script.sh and append #!/usr/bin/go then you're ready to go.
If that is the measure for scripting, then any language goes.
Not quite, not all compiled language provide interpreting capability.