Now as we have reduced doctype to just HTML, almost everybody is using Chrome (and all the alternative browsers are built on the same engine) and the rest use F

Now as we have reduced doctype to just HTML, almost everybody is using Chrome (and all the alternative browsers are built on the same engine) and the rest use Firefox (which still renders HTML almost exactly the same), standards are pretty well-established and most of the people are forced to auto-update regularly and have no problems doing so (thanks to the progress in bandwidth availability) it indeed feels reasonable to clean the user-agent up or deprecate it completely.