Can the tag be part of the question?

Question

Toaster

An example is this question. After all, the text of the question does not say what kind of "tag" this is. They are in many places. For example, HTML also has tags. That is, is it necessary to duplicate keywords in the text of the question?
The question arose in connection with this question. There was a tag about ad blocking, but Alexey Ukolov removed this tag, leaving only the CSS tag (you can see the edit history), which slightly changed the meaning of the question. The changes took effect instantly, without my confirmation.
PS I would like to have immunity from editing tags. :)

Answer 1

Can not. Tags are the functionality of filtering questions and notifications first and last.
If it is important for you that the specified question mentions ad blocking, add it there in text.

Answer 2

Some kind of ferocious stream of consciousness.
Tags on the Toaster are used for selection, search, subscriptions. Sometimes they clarify the context. For example, if someone asks about a regular expression, and the tags are "RegEx", "PHP", then it's immediately clear what syntax they are talking about.
However, if the question is about the CSS selector, no context follows from the text of the question, and in the tags, all of a sudden, "Ad blocking", it is very difficult to immediately guess that we are talking about uBlock's CSS-like syntax. Because this tag looks erroneous, superfluous.
Duplicate tags in the text of the question is not necessary. But to formulate the question in such a way that it is clear what specific task is being discussed is a must. With good wording, the meaning of the tags will be clearer, so that no one will remove them.
And immunity from editing is evil. In 95% of cases, the authors do not want to accept edits, moderators do it. Someone considers edits offensive, someone thinks that he knows better how to write in Russian, and so on. One juvenile idiot in the comments even threatened to cut my skull for editing his "masterpiece". I laughed for a very long time, but this additionally convinced me that the editing functionality controlled by moderators and curators, and not authors, is very correct.