It's surprising that saying "you can end a sentence with a preposition" has attracted so much attention.
The premise of the criticism is that "the dictionary has changed the rules of English," which is wrong, following on "you can't end a sentence with a preposition," which is also wrong.
'Merry' wears a special grammatical holiday sweater in the song “God Rest Ye Merry, Gentlemen,” since 'merry' describes “rest” and not “gentlemen.”
It really means “may you gentlemen rest happily,” and not “may you happy gentlemen now rest.”
www.merriam-webster.com/wordplay/arc...