How is it a bad strategy?
It allows you to take guys that drop because of bonus demands. If you aren't anymore excited about a number of options at your pick, taking the smaller bonus demand guy here to take a better guy later that will fall. It's not a horrible strategy. It's maybe not the best one, but it's one that the Astros appeared to take last year. Cardinals this past year took a few guys earlier with lower demands that they liked fine with those picks, but paid larger bonuses later on guys that would fall because of their signing bonus demands. It gives you the chance to sign multiple first or second round talents in a draft.