They are not exposed. They are not on the list; they won’t show up in the formula editor suggestions until you’ve finished typing them out; they have this icon before them saying these are experimental formulas.
Basically if you didn’t know about them, you normally wouldn’t even try typing them, and if you found them by chance you’d be scared away by the experimental icon.
No one would fix your broken doc if it’s you who broke it by ignoring the warnings.