To some extent, I think it has.
At my table at home or with my normal gaming group - no problem. However, if I want to participate in events which take place at some of the local gaming clubs & stores, I'm not able to participate.
One thing I don't like about character builder is that the errata is all or nothing. I'm not able to choose which errata I want to use. Most of the time the errata makes sense and I agree with it, but there are also plenty of times when I don't agree with the changes and would rather not implement those changes into my game. It would be nice if there were some sort of checklist which would allow you to turn off parts of errata.
It's something of a self defeating problem too. Partly due to not being 100% sold on 4E, DDi didn't offer enough to entice me into purchasing it; this leads to me playing less D&D; that then leads to me needing DDi even less; etc, and so on.
edit: Also, I don't find the character builder to be a good tool for rules checking. The character builder isn't always correct in the way that it applies some of the rules. Building a 4E character is fairly simple too, so I never understood the need to pay for a program for that. There are times I've made mistakes, but the character builder makes mistakes too; my mistakes are free; the ones made by character builder come with a monthly fee.