Best at what? You've link to a notoriously unscientific index which counts search engine results. How does that make one language universally better than all others "period". I've coded in Java for most of my career, but the blind blinkered faith in the language within the Java community never ceases to amaze me. It's one tool available among many, look a little further than that single hammer which you worship in your toolbox.
I agree. I've ran across a few obscure languages I thought would be barren, but found they had exciting new developments happening. It made me realized there's a big difference between the number of language contributors and the number of language users. Most are language users, like myself, who glue a few libraries together and write a little business logic and call myself a programmer. Whereas a language contributor (as I call them) create libraries, development tools, etc. I've wondered if the number of language contributors is roughly equal, within an order of magnitude, across most languages, even the obscure ones. Language contributors add quality to the language, language users (again, myself) don't.