A significant part of that is they lack of a truck option considering how popular the Ford Lightning, Rivian, etc are. Alongside that is the general perception of stagnation among car buyers, the yoke was seen as a gimmick not the refresh the model S is in serious need of.
They just keep fumbling. Consider the amount of bad press they got around the undersized breaks on the Plaid or their 1 foot rollout numbers. What could have been a real halo product did almost as much harm as it helped.