Except for the part where The Warriors have been much worse without Curry, while the Cavs (this season) have weirdly been a bit better without LeBron. Yeah, Curry’s teammates rock, but none of them has had close to the impact of Curry (Thompson +3.5, Durant +0.2, Green +0.6, Iguodala +1.3).
I'd still probably agree with the premise due to LeBron's preternatural durability, but I don't think we've seen much evidence that, when healthy, "Curry can't carry a team the way LeBron has." Before KD came around, Curry carried a team to 171 wins (??) and a championship over two seasons. Yeah, you want to build a specific type of team around him (long, versatile defenders and playmakers), but you also want to build a specific type of team around LeBron (3 and D guys who can shoot lights out and like playing off ball).
Anyway, sounds like Curry may be the first of the Big 4 Wounded Warriors off the injured list starting tomorrow, so we may get to see for a few games how well he carries the team without KD, Klay, or Dray. I'm pretty confident he'll do so rather well. He's in the rare group of players whose efficiency seems to rise with increased usage, and at this point he's basically a data point all his own with respect to the historic usage/efficiency curve (or at worst 1a/1b with 2016 Steph Curry).
Of course, we're only talking about offense; the strongest argument for LeBron (or Durant or Kawhi or AD) over Curry is their ability to impact the game defensively. But I think that narrative doesn't fly as well this season (to date, anyway) given LeBron and the Cavs' consistently horrific defense. The question then becomes how much of that is age-related decline and how much of it is LeBron coasting on that end during the regular season, before flipping the switch in the playoffs and vaporizing everyone. I think people tend to underrate the age factor (when decline comes, I think it tends to show up on D before O) but I've also seen LeSwitch enough times that I'm not betting le farm that he won't make it back to the finals for the 8th straight season.