Has there been substantial discussion about this feature? Neither of the two links provided lead to deep discussions about this. It doesn't seem like this is re

Has there been substantial discussion about this feature? Neither of the two links provided lead to deep discussions about this. It doesn't seem like this is related to any agreed upon standards process. As far as I can tell, this is being presented as a change to the programming model which will be undertaken unilaterally. Are we back to the days where one browser gets to decide how the web works, and everyone else can catch up if they like?