I've only seen grifters, hysterics, or the ignorant talking about existential AI risk. A lot of people just nods their heads and go along, but I don't think there are many that have really thought about it (and understand what modern AI is) that really belive the risk.

It's more like political polarization where people dwell on something they don't agree with to the point where they treat it as if the world is going to end because of it, instead of in context. AI is more like the political party they don't like winning, potentially undesirable from a certain point of view but they see it as "existential".

I think it's important to see it in this light, instead of trying to actually debate the points raised, which are absurd and will only give credibility where none is due.