People don't want to admit it, but Sochan has been able to keep Luka relatively in check when they face off with each other. Luka vs. Spurs when Sochan plays, 35MPG, 31ppg on 43% FG, 32 3P%, 54% TS, 10 rebounds, 10.1 assists, 2 stls. The last two games Sochan actually held him to 21pts on 25% shooting and 28 pts on 36% shooting, so having Sochan back to guard Doncic could help.
But then this goes against the narrative people try to paint, which is if Sochan is bad on offence, he must suck at every single other aspect, including defence, his general intelligence and how he is as a person.