I flagged this question for closure because it's a comment and not a question. I also left a comment for the OP explaining why I flagged their question. I understand they can't see the flag but I'm also trying to help them improve their future questions by understanding the reason it was flagged.
A mod let me know that I don't need to leave comments when flagging. His answer made sense but I can also see it as a teaching experience for the OP.
I then read this question and saw a mod did the exact same thing I did on the previous question.
So now I'm a bit confused as to whether or not it's a good practice to leave comments for the OP indicating why their question is being flagged for closure? Is it just up to the individual mod whether or not to allow/leave these types of comments? If not, is there a Help Center topic that addresses this?