I think Boruc's decision making and kicking skills are a little lacking, for sure.
But tbf to him, our passing game at the back always makes me nervous. The fullbacks often pass back to Boruc when put under slight pressure, in an attempt to alter the direction of ball movement and possibly open up something upfield. And sometimes it does result in a nice Rodriguez run. But often the opposing team just covers the defender who made the backpass and then there's no one for Boruc to pass to.
In that situation, there's little Boruc can do but to play a safe, long boot towards the sideline. Essentially he's making the clearance the fullback should/could have made. If he were better, a few more of those low-percentage kicks would find their target or at least result in 50/50 balls rather than just get shanked over the sideline but I don't think it makes that much of a difference. I really don't mind if he kicks those balls out of bounds, in fact I wish he would do it more often instead of attempting Cruyff turns or passing back out the the defenders and giving me a heart attack.