Hating on Javascript is one of the trendiest things to do in online tech-centric communities.
The future of Javascript is bright, and the new features added are vast improvements onto a language that stagnated far too long. Many of the criticisms towards the new features are not well thought out. Luckily the TC39 committee is full of extremely intelligent developers who have a good understanding of the nuances in adding new features.
On the other hand, there are at least some that have been coding in JS for a long time and loved the simplicity and yet versatility of the language. And there's a feeling of some of this being lost in the latest iterations of the standard. To be fair, I would rather observe this criticism in a RISC vs CISC context. (With ES6, JS is definitely taking a rather CISC-like direction.)
The future of Javascript is bright, and the new features added are vast improvements onto a language that stagnated far too long. Many of the criticisms towards the new features are not well thought out. Luckily the TC39 committee is full of extremely intelligent developers who have a good understanding of the nuances in adding new features.