See also About unnecessary tags and the minor edits adding themAbout unnecessary tags and the minor edits adding them for my list of low-quality tags.
*See Troyen's commentTroyen's comment for a downside to this suggestion for the smaller SE sites
As far as I could see, there's no option to flag tag wikis (I'd guess because they have to get approved by 5000+ rep users in the first place). I do think it would be useful to be able to flag these, so that we don't have to create list-your-bad-tags postslist-your-bad-tags posts on meta.
What I think is that perhaps if there are some audits that simulate edits adding very minor tags, such as the ones listed herelisted here, these extra audits would help the reviewers spot these minor edits more often, and therefore prevent these kinds of minor edits from being accepted so often.
Short on rep? Find 1000 questions, no matter how old they are, and enrich them with some bullshit tag like
image
ordiv
. Get them rubber-stamped by three reviewers and enjoy your free rep! —Pëkka's bounty message on this questionPëkka's bounty message on this question
*See Charles' reply to thisCharles' reply to this for the better alternative.