It's only unfair if you consider Java as done and set in stone. But it doesn't have to be that way, and fortunately it isn't; Java is still improving by adoptin

It's only unfair if you consider Java as done and set in stone. But it doesn't have to be that way, and fortunately it isn't; Java is still improving by adopting ideas which have proven themselves to work in other programming languages. Java 8 is a better language today because of the obvious influence of C# (among others).