In fairness, the Raptors just won it all playing effectively a
two-man bench in the Finals: Ibaka and VanVleet (with spot minutes here and there for Norman Powell).
The Warriors "Mexican league" bench was headlined by two very good players in Iguodala and Looney (or Cousins and Looney if you consider Andre a starter) followed by Livingston, Cook, Bogut, Jerebko, and McKinnie, all of whom stepped up at one point or another during the playoffs. Not great, but possibly deeper than Toronto's bench post Gasol trade. They got burned when literally everyone in the front 7 except Draymond and Steph suffered either serious or devastating injuries — but then, no one expects the Spanish Inquisition. They were a Steph jumper away from forcing a Game 7 even with all the injuries. Give them just awful injury luck as opposed to ridiculously awful luck and they probably pull off the three-peat.
On topic, I'm not too concerned about the new Lakers' bench depth (from their perspective). They'll find guys. Which isn't to say I think they're overwhelming title favorites or anything. I think they're probably serious contenders (depending on what happens with that last $32M) but once you factor in question marks regarding chemistry, age, new coaching, potential defensive and spacing issues, level of competition, etc., I'd be surprised if they're better than a 10-15% shot against the field in real terms. (Though Vegas will probably give them significantly better odds than that due to its proximity to LA and slobbering Laker fans).