I wouldn’t say I’ve had “bad” experiences at car dealerships, instead I’ve had tedious, time wasting and sometimes contentious ones, where we are all in there playing the game of the salesman, closer and the gal in F&I working me over, and I working them over right back. Four to six hours and half a day wasted later, I go home in a brand new car.
A pointless exercise when instead, I could just go to Lucid, or Tesla, and order right off there website in a matter of minutes.
As for after sales service, I never had any need of them after the warranty period, I retained an indepent ICE mechanic who I trusted implicitly.