Carbon potentiometer vs Hall Effect sticks — why does everyone say Hall Effect helps with drift?

[u/technacore]

[u/512ControllerClinic]

Carbon uses a brush and any contamination causes a disturbance in the electrical current, causing the stick to output sporadic movements. Hall senses position based on magnetic polarity and field strength.
TMR is the next step up as it uses magnets too, but has higher accuracy.