When a normal user (without moderator privileges) tries to remove a moderator-only tag (e.g. featured) from a post, this error is shown:
The moderator tag '[tag name]' must be present.
I feel that wording is not good and can be changed to something like this:
'[tag name]' can only be removed by moderators.
For reference, let's take a look at the error shown when a normal user (without moderator privileges) tries to add a moderator-only tag to a post.
'[tag name]' can only be used by moderators.
I request the SE staff to change the wording of the error shown when a normal user (without moderator privileges) removes a moderator-only tag and make it consistent with the wording of the error shown when the user adds such a tag.