[2019] Dismemberment is a thing for creatures but not humans as it is a T rated game, dev interview

Important to remember that games of the past didn't have motion capture, face scanning, or anywhere near the fidelity of modern gaming. Before, it was just blocky characters getting chopped up. Now, it's practically actual people.

Artistically, it's also not something seen often in Star Wars battles. When Jedi/lightsaber wielders fight, it's often just deep cuts, as seen in Order 66, TCW, Rebels, Battlefront, the comics, and other scenes/mediums. It's usually only used as an intense moment, like when Ben beheaded the Praetorian Guard or when Dooku cut off Anakin's arm. It rarely if ever happens in regular fighting against troopers (not including droids). Even Darth Vader didn't cut up body parts while fighting through the Tantiv IV at the end of Rogue One. It only really happened in a handful of EU/Legends video games.