Dirac delta is pretty basic concept and we have multiple questions mentioning it. It also causes many confusion, so it is likely to provoke new questions among those who first encounter it. Maybe we should create a tag for it?
I am providing an answer so to bump the question and close it with some conclusion.
Personally I'd considered
[dirac-delta] tag useful. The question already got eight upvotes and one negative (?) comment by Carl. I'd say that the response to this idea is positive, so I'd consider creating it.
So to close this issue: is there anyone who does not agree with this idea? Are there any more arguments against it?
Since there is not much interest in the thread and it got rather positive response, I created the dirac-delta tag and started re-tagging.