I know from a "getting bugs fixed" perspective it's important to make sure that things are being fixed, or followed up on... but geeze, is it ever a time sink.
Sometimes I go through things, but its easy to think you've done your part if you submit a bug report, a reproducer, and even a patch.
I'd expect that once a patch is there and it is consistent it would be applied, whereas just reporting what a fuzzer finds is not too helpful.