Is it? Getting a specific return for Stroman might be, but the plan here presupposes that you're fine with that not happening too. Yes, buying low and having it pay off is an uncommon outcome by definition, but it also definitonally comes at a low cost. If you trade for, I dunno, Bobby Dalbec, and he isn't any good that's not the preferred endgame, but the opportunity cost is lower and that risk exists for every type of acquisition(see: Heyward, Taillon, Quintana, Justin Wilson, etc)