You're missing my point. The world won't stop just because you decide to reflect on the situation and have small groups of people unilaterally decide what will

You're missing my point. The world won't stop just because you decide to reflect on the situation and have small groups of people unilaterally decide what will someday maybe be standardized in some browsers. In the meantime the new features will get developed as non-standard features and you'll have even more proliferation of cruft, "polyfills" and whatever else PPK is complaining about.