i saw something once where someone made some private messaging system using encryption and generating keys.

beside that tho i think what you want is beyond the scope of the current comments plugin in perchance. tho it wouldnt be hard for @perchance@lemmy.world to make it so a comment box can display no comments unless the user is Moderator, which sounds like the simple way to do what you are asking.

I believe the feedback button is not connected to the comments system at all. If you would like something like that, you need somewhere for the messages to go. If you had your own server (maybe there are free ones that would work) somewhere it would be very easy with node.js coding just having the perchance page send the msg to your server and store it in a file. Tho you need some coding to do that. I could look in to this for you if you would like. This would be the closest to replicating the feedback button.

It is also very very easy to have a button open up someone's email with the recipient already filled out so they just have to type the msg and hit send. they have to have an email tho, which is more personal information than you should need.

And there are probably 'free messaging' things on the internet you can embed tho that would have to be found outside perchance as well.