No, the handle does not get hot at all.
The lid gets warm, but there is no risk of burning. (Except for the valve, which is self-explanatory).

What is unpleasant is the edge of the pot sticking to the lid. In any case, I have problems with this.

The knob is made of plastic with a metal look.
Once the pressure has been released, the lid can be opened without danger.
Can recommend the cooker with a clear conscience.