I am a moderator and you can check, I try to review posts with a short note if they need corrections I mention them and I try to answer if users have any questions. In short I try to make the user feel that I have read his post. There was a time when I just checked their post to see if there was any abuse, then I finished the review but when I started to write a summary or a comment on their post, I noticed, they happily replied. I would like to thank you for raising this question. You can check any of my review comments to see how users respond to my review comments. I think you will be happy to see. Although it takes a lot of time, I think this is what proper engagement is and as a moderator it is my responsibility.