Clippers are nowhere near the worst of the worst. I guess they could get lucky with the new lottery system, but they'll most likely be in the 10-14 range again. And the Lakers can offer Ingram, who was the deserved #2 pick and has loads of upside at the most important position/role in the NBA.
As an initial point, Kawhi is not concerned about guys like Ingram and Kuzma because he's much better, and he's smart enough to know that 1) wing depth is very important, and 2) those guys can be flipped for other assets. So that's 100% a non-issue. (and if you want to play that game, the Clippers have Gallinari and Tobias Harris, who when healthy are both better than Ingram and Kuzma right now)
But the playing the same position argument you've made on several occasions is something from 2005, and frankly the idea of positions is a bit outdated (more important to think of roles, at least on offense). Having lots of wings that can guard multiple positions is something all the best teams are doing: Celtics (Brown, Hayward, Tatum, and to a lesser extent Ojeleye, Nader, and Morris), Rockets (Ariza last year, Mbah a Moute, PJ Tucker, even Gerald Green), Warriors (Durant, Klay, Iggy, even Draymond). And for good reason - it allows the use of versatile offensive players (i.e. spacing and playmaking) and the ability to switch on D to help nullify PnR heavy offenses and off-ball action.
LeBron and Kawhi is an amazing combination, and they absolutely, 100% can play together and compliment each other's games well. And the Lakers can use Ingram/Kuzma/Hart as trade bait to bring in players at other positions/roles, or they can just enjoy the type of depth at the wings that helped the Rockets nearly defeat the Warriors, the Celtics go farther than expected, and the Warriors to win a title. FFS, a LeBron/Kawhi/Ingram/Hart (or Kuzma)/Ball lineup would destroy most teams in the league (but in small stretches, like the Warriors death lineup, to preserve players for the playoffs).