The only thing worse than people misusing the term ‘enshittification’ are people who criticise that but can’t be bothered to get their facts straight.
No, it’s not a meaningless buzzword. And no, it was not made up by nostalgic millennials. It would have taken you a mere minute of online research to figure that out yourself.
Devil’s advocacy is supposed to be, ultimately, constructive to the discussion. If that’s what you’re doing, then good on you. A lot of people just do it to throw a spanner in the works.