> ...(C, bourne shell, etc etc) have this exact same problem...

Doesn't Bourne shell syntax have terminator keywords for all control flow structures? https://unix.stackexchange.com/a/256152

It does (so you have esac to end a case statement in this case) but depending on what combination of line noise (;& vs ;;) you use, you have case fallthrough like c. You have to sort of want to do it (ie ;& isn't very common) but it does happen.

Case fallthrough almost always ends in tears.