overload is very useful, but I find some people mistakenly think it actually modifies the runtime function signature to do multiple dispatch, so I do try to avoid it in favour of simpler functions whenever possible

too many overloads can be a code smell IMHO, it's ok when you are implementing a very common pattern and want proper types (decorators come to mind, so that both @decorator and @decorator() work, where the decorator might also have optional args) but I think in cases like the example in the article it should almost always be two separate functions