Backup level guards aren't traded that much. They're usually pretty easy to acquire without needing trades. Moving two backup guards in a trade is even rarer. The easiest way to move backup guards is for picks on draft day. If not then, then it becomes extremely difficult and many times you'd have guard(s) coming back in return, like Brooks going and Douglas coming.
But trading backup guards for SF's and PF's is just rare, and we'd need to do it in 2-3 trades. I think some believe clearing our backcourt will be much easier than it is in reality. And as of now I see no evidence anyone wants any of our backups. Couldn't move them last year without taking a guard back, couldn't move them tonight as of yet, while trying like crazy to acquire picks.