We don't need any of these tags. Not only are they meta tags, but I have no clue what they are or what they mean without going to the tag description.
How are these tags useful? How are these tags addressing something that
- The asker won't already mention when asking the question
- Won't be reviewed with or without the tag?
Absolutely everything about a posted question is eligible for review.
The job of a tag is to tell me what the question is about, so that I can find questions/answers about a specific topic that I'm interesting in reading about. None of these three tags do that.
When I'm considering writing a review about a question, the focus of my review comes first from things that immediately stand out to me in the posted code, and second from explanations/comments in the non-code part of the question. In my nearly 100 CodeReview answers, I don't think I've ever taken a tag into consideration in terms of what my answer is about, and I don't plan to start any time soon.
So it seems to me that these tags are not beneficial in the way that tags should be, and as such, they should be removed. Not necessarily because they're acronyms, but because they're not useful as tags (other acronym tags can be fine, like sql...)