Hogwash. In a language with operator overloading, this would be something like `a.assign(b.plus(c))`. Which really doesn't tell you more about what go on under the wraps than the operator form.
What can be confusing is what the meaning of `+` (or `plus` is). In some case it can be fairly obvious (e.g. concatenating sequences), while in other not so much. Operator overloading is nice, but has to be used tastefully (like every abstraction or language tool).
The point the OP made was that operator overloading is not nice - it means that any operator (not just function) can do anything. It makes code harder to read and reason about.
What can be confusing is what the meaning of `+` (or `plus` is). In some case it can be fairly obvious (e.g. concatenating sequences), while in other not so much. Operator overloading is nice, but has to be used tastefully (like every abstraction or language tool).