I think it's important to distinguish two things ABRT does:
1. it makes (or at least it is supposed to) it easier to report bugs to
bugzilla.
2. it makes so called ureports that are used for the statistics and
weighting problems.
ad 1) I think ABRT offers two ways to create backtraces etc. Either on
their server or on your machine. AFAIK ABRT started preferring the
former option because users don't have to install all the debug tools to
report a problem, but if their server is overloaded it may take ages to
create a bug report.
ad 2) This is not slow at all. ureports are created and uploaded within
seconds.
I agree with Christian. We should not remove ABRT completely. The
retrace server is an important tool for many developers. If reporting
bugs is broken, then we may disable it and let ABRT create only the
ureports until it's fixed. On the other hand, we would lose links to
actual bug reports in bugzilla. I also agree that there needs to be
something done with the UI which is frankly quite terrible.