How is “a moot point” used?

In Uncut Gems (2019), one line is: “It's a moot point, Demany, because I don't have these. All right?”

Which movie is “a moot point” from?

The clip at the top of this page is from Uncut Gems (2019).

It's a moot point, Demany, because I don't have these. All right?

4 作品で登場 · 1 本目

something that no longer matters or is not worth discussing

アメリカ英語 · イギリス英語 · 4 本の映画に登場

編集映画の 100%
something that no longer matters or is not worth discussing
It's a moot point, Demany, because I don't have these. All right?
Holding the rest of you became a moot point.

定義：Oxford Advanced Learner's Dictionary 第 9 版