The main argument is that it’s not in the right ballpark though - which has no universal correct answer. However at this point 80 is not arbitrary - It’s primar

The main argument is that it’s not in the right ballpark though - which has no universal correct answer. However at this point 80 is not arbitrary - It’s primarily used as a default because of ancient history when 4k let alone 640k was enough for everybody. A time when the expense of expanding a meager terminal buffer 50% was hundreds of dollars - and this goes back to ancient history of 80 column punchcards.