Here's the proposal they meant to send out prior to the announcement, which explains the rationale: https://lists.w3.org/Archives/Public/public-whatwg-archive/2

Here's the proposal they meant to send out prior to the announcement, which explains the rationale: https://lists.w3.org/Archives/Public/public-whatwg-archive/2015Jun/0017.html https://lists.w3.org/Archives/Public/public-whatwg-archive/2...