Dammit. How many more of these "fixes" am I going to have to house-rule out of 4E before I can play the game I love?
I've been gaming for more than 20 years, almost exclusively as the DM. I always award bonus XP, at least once per game session but sometimes as frequently as every encounter. I award it for many different reasons, but most often, I award it for good roleplaying. I also give XP penalties, but that's another topic. Anyway, I have never observed any of the ill effects described (lack of fun, overly judgmental perceptions, hurt feelings, assessments of crappiness, the begging of stupid questions, etc.) Maybe I'm not doing it right, or maybe I'm just oblivious to the secret pain and suffering of my players, or maybe my games have been "downright crappy" all these years and nobody ever noticed. But to my knowledge, it has never killed anyone's fun or broken any of my games. My players are always happy and excited about game night, have a good time, and give generally positive feedback.
I'm pretty good at deciding what does and does not work at my table. I see no need for this rule at all.