Even if that's the case (not exactly what I said, or at least not what I meant. Defense is a team game, both rebounding and on-ball defense are a part of it, everything requires a team effort), even if on-ball defense is more important or more valuable than defensive rebounding, it doesn't change the key point - defensive rebounding is a part of being a good defender. Smart is a lousy rebounder (and average at best even for his size), so it's a minor con when evaluating his defense as a whole, especially when comparing him to other all-defense types.
And regarding your specific example (Smart forces Booker into a tough shot, TT grabs the miss), it's not as simple as all that. Booker is a real good scorer, 25th in the league in ppg, so Smart has his hands full. In order to get that defense rebound, TT probably has to fight off Ayton, who is 6th in ORPG and 5th in total RPG. Shrugging off individual rebounding ability as just a team concept is a bit harsh, I think.
