Part of the inevitabilism is how these tools are being pushed. At this point it doesn't matter how good they are, it's just how many people live now. Microsoft sure knows how to turn bad software mainstream.

It helps also that these tools behave exactly like how they are marketed, they even tell you that they are thinking, and then deceive you when they are wrong.

Their overconfidence is almost a feature, they don't need to be that good, just provide that illusion