You can still install your own bash now, or even continue to run the old, obsolete version. But yes, it won't be the default.
I don't use macOS as pretty UNIX, rather for XCode, testing Websites on Safari, doing iOS stuff.
So when something doesn't get used, the exploits don't matter that much.
You can still install your own bash now, or even continue to run the old, obsolete version. But yes, it won't be the default.