That's accurate. `rm -rf /* ` will still work to delete everything. But that said, `rm -rf "$STREAMROOT/"` can't ever expand to that, and more-over since the expansions in double-quotes it won't be subject to path expansion by bash. So even "/* /", which would normally expand into "/bin/ /dev/ /etc/ ..." won't. You can see what I mean yourself, just use echo:
`echo /* `: /bin /dev /etc /lib ...
`echo /*/`: /bin/ /dev/ /etc/ /lib/ ...
`echo "/*"`: /*
`echo "/*/"`: /*/
If you try it with `ls`, you'll find that `ls "/* "` results in `ls: "/* ": no such file or directory`.Edit: Formatting.