A few years ago, the W3C reached out to the WHATWG in order to put an end to the continuous bickering, stop work duplication, end the confusion that developers (and many others) feel due to the split, etc. The proposal was made in private to avoid the acrimonious politics that it would draw and in the hope of eventually surfacing it as a bilateral proposal rather than an olive branch from just one protagonist. (This may have been a mistake.)
The founding principle of the proposal was that in a world of computers and automated publishing, the living standard versus snapshot divide is stupid: you can have both, with one generated from the other. There is no need to convince others that your view is best. There is certainly no need to condescend to Web developers because they may not behave the way you wish they did. You only need to make it clear which is which and what each is for.