Meanwhile the Firefox rewrite, the premium example of what they propose is still plodding along and Mozilla PR blogs aside, Firefox is still plugging vulnerabilities in each release and will be for the foreseeable future.
Now let's look at the Swift community... do we have blog posts from them every week about how awesome Swift is and why one should rewrite their working C and C++ code in Swift? No, they keep doing their thing, Swift is becoming better at cross platform, it's also getting some support for machine learning.
That's how one grows a language, through building successful projects, staying positive (and having an entire platform behind it). Not through doomsday scenarios and a constant barrage of criticism.