Language may well change, but it shouldn’t do so to the detriment of correct grammar. I can only assume that grammar has not been taught in schools for a long time. Examples that spring to mind that haven’t already been mentioned are “ you and I” when it should be “ you and me”, “under the circumstances” when it should be “in the circumstances”. In addition the incorrect use of apostrophes drives me insane! The contraction of “it is” is “it’s” and the possessive is its - no apostrophe. All this and more was drilled into me at school in the 50s. Youngsters argue that it doesn’t matter as long as their meaning is conveyed, but I disagree. Call me old-fashioned but I find it difficult, unless I have met the person, not to make a judgement based on how they write.