With LAC, they never had the personnel to deal with MIN or DEN tbh. Covington and Batum weren't it (same height as PG), and they were getting packed up in the Bubble with Morris Sr and Trez. Their '21 WCFs run they didn't face twin-tower duos or a dominant scoring big. The question mark is they kept Mann as this untouchable role player past the deadline but the light skin nygga off the bench is better.
Tho to me, being undersized at the 4 is not why they lost. Gil Arenas said it a while back and i agree: if you slow the game down with LAC, they start getting in their own way offensively. Noticed it with the LAL games. Kawhi doesn't get easy shots and where they give him the ball, its so obvious the double is coming but he allows it to happen. And if he passes, the ball doesn't come back to him. He/they could learn from moving off ball like what Curry/Klay do. Harden system ball is optimized when Zubac is dominant in the paint but against a team like MIN, that's not going to happen, so all the usual stuff that opens up with Harden Ball is closed.