Because addressing our offensive woes (we were 25th in the league) is as of now much, much more important than our defensive woes.
Burks and Hood, if given roles where they best succeed in this offense, will give much more offensive diversity in a wider range of roles and positions than Carroll ever could. Carroll can gun threes, great-- Burks and Hood can both do more. The only way Demarre is coming to Utah is if he's promised a ****-ton of minutes (at the expense of players on this squad who have higher ceilings) and his contract costs a ****-ton, stretched over an extensive period of time. Why on earth are we doing this when we have an extensive amount of evidence that our perimeter D post-ASB was good, and yet our offense still wasn't?
Stunting the development, and giving strange roles to players we're investing a ton in purely for the sake of "having a bulldog" is simply stupidity, in my opinion. Burke's and Joe's minutes can both be taken away by multiple players on this roster who've shown potential to have NBA-level games themselves, along with playing good minutes in winning games last season.