Really? So you'd turn down Betts for Harper? Castillo for Goldschmidt? JBJ for Rizzo?
Not that any of those deals are going to happen, of course--the point just being, again, that nobody should be off limits. You may just set a high bar for dealing certain guys because they project to provide you with great bang for buck. If somebody knocks you over with an offer that meets that high bar, you don't say "sorry, but that guy is off limits."
I'm as much of a prospect addict as anybody around here, but young players are awesome because they can produce cheap wins. If you can convert some of them into less cheap, but still affordable wins that are more certain or more near-term, that's a perfectly valid thing to do as long as you don't do it so much that you mortgage the long term for the short. And the whole point, or at least a large part of the point, of building a farm system as deep as ours is to give management choices of that kind. When you have Betts, JBJ and Castillo, you can deal one of them. When you have Margot, Devers and Moncada, you can deal one of them. Et cetera. Just make sure you get full value.
Maybe Dombrowski will do a little more of this kind of thing than some of us are comfortable with, but saying he shouldn't do it at all is asking him to run the team with one hand behind his back. Young players should not be treated like binkies or sacred cows; they're sources of value, whether they're played or cashed in.