Tesla marketed their immature technology with the name Autopilot, they failed to include safety features their competitors' vehicles had and they knew how people behaved (trusted and crashed) because of it.
I find it hard to fault consumers for naively putting trust in their vehicles.
Most people don't know even 1% of the intricacies of the technology products or services that they are using. The responsibility rests almost entirely on the provider to offer a "safe" product (and that means also offering protection against the "stupidity" of users).
Because humans are flawed.
The real question is why is our regulatory framework so weak that they can ship "immature technology" that's safety critical in a consumer vehicle.