This trope has been discussed ad nauseum since I started here on the wiki three years back. There are several things I can tell you:
1) In all the time we've discussed what to do with WB/DMOS/SBIH, no one has ever given a good reason to delete it beyond "I don't like complaining".
2) There is a distinct difference between all three pages. WB is generally "bad" moments supported by other tropes that indicate bad or ineffective writing. DMOS is for examples signed by a poster, and expressing their own personal opinion where a work failed completely. SBIH is for works where even the intended fans agree that it was poorly made on just about every concievable level.
3) There will always be negativity on the wiki - WB is one of the structured outlets users can use to highlight bad writing in a more constructive form.
If there's whining or natter about moments that people seem to be contentious about, just remove it. You seem to want to take the baby with the bathwater - as I've said before, I doubt there would be enough support on this wiki to remove WB altogether. After all, it is one of the older pages on the site, and has survived through countless discussions on what to do with it. I haven't seen any evidence that there are In-Universe
examples in the first place.