How are flags handled by the community? [duplicate]

I was going through my helpful flags, when I came across this question I flagged: How to approach $\int\limits_0^\infty \frac{\tan^{-1}\alpha x\tan^{-1}\beta x}{x^2}\,\mathrm{d}x$?

Notice how the question isn't closed, even though my flag is a helpful flag. What does it mean exactly when a flag is helpful, and how exactly do helpful flags get questions closed?

• Also please read Guidance for how and when to fag a question: declined flags Mar 23, 2021 at 22:38
• SomeGuy: Please review former meta posts prior to reasking questions previously answered elsewhere. You're sort of making a habit of asking duplicate questions on meta. Mar 23, 2021 at 22:39
• And if you review older posts, before asking, include that context in any such post you think did not answer your question. Mar 23, 2021 at 22:41