This is the exact opposite of the truth and a prime example of why he’s overrated. He’s 100% reliant on other guys, has a below average career metrics/impact during the playoffs and any time Curry is out and his usage goes up at all he’s basically a net negative player even on offense.
Edit: for example this year since Curry has missed 17 games and Klay needed to shoulder more of the load (even with KD playing): PER: 15.6 (league average is 15), and now that he’s having his highest usage rate season he’s ever had (28.5)? Offensive win-shares = .3, offensive box score plus-minus = -0,7, overall BPM -3.5 and VORP -.4.