https://electronics.stackexchange.com/review/suggested-edits/30251 and the next one offer no context on what the original post was. Is this as its meant to be?
The discharge is being used on questions, but nobody yet took the effort of writing a tag-wiki (and tag wiki excerpt). So the first one who proposes content for the tag wiki basically changes the empty text to a new text. Also notice that you often get two almost similar edits, but if you watch closely one is for the wiki and the other one for the wiki-excerpt.
My personal opinion is that any reasonable text for a tag wiki is better than an empty one, so I am usually pretty easy on approving initial proposed text. When necessary it can be improved and I think it the threshold for improving an existing tag wiki is easier taken than the threshold for coming up with a completely new text.