Not having operator overload making the code more readable is the same argument that was brought up with generics and it is still false.
Go does have operator overloading, for example + is overloaded for float.., int.. and even non numeric types like string.
And it does so for a very good reason: having operator overloading makes code much more readable when used correctly. It's just that the language designers didn't trust their users.
As long as you know the types of x and y you always know precisely what x + y does, same as you know what x.Add(y) does. There's no difference.
Sure there are cheaper options then GCS but, there is no one providing unlimited free bandwidth