Which one can't? One's 23 and the other's 22, and they're already both better-than-average everyday MLB position players and both have positional flexibility.
I mean, I hate the Cardinals more than the average dude, but those guys are both legit.
Carlson can't be the solo key piece to a Soto trade. it can't be "Carlson and a couple AA arms for Soto."
But if Soto was traded for a package of Gorman, Carlson, and Liberatore plus a couple low minors prospects? Sign me up now. I don't know how the Padres can approach that without the Nationals thinking CJ Abrams is a sure thing All Star.