I think that C provides fewer layers of abstraction than other languages. This requires the programmer to deal with memory management, treat strings as an array of characters, and other things that the majority of high-level languages conceptualise, so that the human mind deals with it more easily. This provides advantages and disadvantages, as it requires more thought and understanding to write the code but also allows the use of low-level features. The lack of tools to solve any learning issues is probably down to the programmer needing the right conceptual understanding and the requirements placed on anyone using the various features of the language.

It could be very useful for cleaning resources. I've never used GoLang, but can see how that could be useful in various circumstances. As we're talking about C, I suspect a feature like that, with the potential to make things safer, would also enable the unwary to shoot themselves in the foot more easily.