The lightsaber is a glorified baseball bat...in ROTJ on Jabba's Sail Barge. Luke's hacking through people and they're just falling down or off the side of the skiffs. Vader took a few direct hits in the OT without being sliced in half too.Post-buyout LFL seems to seriously misunderstand what lightsabers are. I recall one part in Ep. 4 of Kenobi where Obi-Wan whacks a Stormtrooper with the blade multiple times in the chest before the trooper goes down. He should have been sliced in two on the first swing.
If it bothers you that much just imagine Obi-Wan turned the power setting down on his saber so that little Leia wouldn't have to witness complete dismemberment on top of the threat of being tortured.