Not a great example because actually you can't override simple assignment but that aside, I was disputing that Scala had more features. It doesn't. I've acknowledged that the features it does have are more powerful and could be abused.

The fact that operators are methods and can be overridden simplifies things - you no longer need to know and remember operators. They are always methods on the type you are looking at. This is what I mean by more regular and fewer surprises, the footprint is smaller.

So you can use this simpler, more powerful feature to create DSLs. They are compile checked and are "real Scala". The tools autoamtically help you. Of course, DSLs exist in Java but they often involve tools like JTB and JavaCC, extra compilation steps, no compiler assistance for users - I could go on. Which is more complex?

Anyway, I agree you could abuse the more powerful language features to write hard to comprehend code. However if you take a look at Scala code in the wild, you will see that these concerns so far have been largely theoretical and of course you can also write incomprehensible junk in Java or any other language should you wish.

I'd encourage people to try the Coursera Scala course which is running again soon, and see for yourself.