The answer is a gritty, in-your-face "no". We have a recurring situation where all vendors (save for Apple) show interest in standard, but because Apple does not express that same interest, the standard gets waylaid. That is literally not true – Google, by some metrics the biggest vendor, has also shown no interest in PE. Frankly, I don't see that much of a problem with Webkit and its' adherence to standards. Broadly…
They have shown no interest in Web Components.
They have shown no interest in WebRTC.
They have shown no interest in Service Workers.
They have very little ES6 support.
Let's not focus on the one example given in the article, this is a pattern.