Old people use quotation marks to indicate emphasis, as a substitute for italics (which many of them could not produce on the old typewriters they learned to write on), whereas young people use them to indicate sarcasm or falseness. They’re used as “scare quotes”.
And old people use ellipses simply to indicate a pause, or for some other incomprehensible reason I’m not aware of. But young people use ellipses to indicate passive-aggression.
So an old person could type something like:
how are things going with your “boyfriend”….
How are things going with your boyfriend? [Im so excited for you, sweetie, and I wanna hear about it]
But a young person would interpret that sentence as
How are things going with your so-called boyfriend…. [I say, while seething with contempt for him and possibly for you too]