I would argue smart phones were the last game changer (iPhone was 2007 I think). If you're privileged (like in the grand scale of the world), a smartphone is a quality of life upgrade. But all over the planet, the access to wifi combined with a super cheap smartphone allows people to start businesses they otherwise would have been able to, open and manage bank accounts etc. when it would have never been possible.
I kind of see the logic of dismissing AI as a trend, only because pointing to each tech dad and claiming it will change the world gets old, and saying "I called it" 10 years later when it does change the world doesn't really do anything.
But at the same time, chat gpt3 is only a little over year old, which I would mark as the beginning of public enthusiasm and attention for AI. Really great voice recreation AI is even newer, and both are already shredding through entertainment, calling out a "plateau" when it's only "plateaued" for a few months is a little hasty.
Edit: I know the person I replied to wasn't on the other side of this, I was just continuing the convo.