Yes, I absolutely agree with you, when we are commenting we write our thoughts, ideas, emotions and we put this everything in our comments. Only in that case the comment is not only simply: "Great bro!" but going in depth comment. When receiving such "Bro2.. comment often my fingers want to push "downvote" button because I am in doubt that the user read it at all and just written something to be seen or maybe simply because wanted to have an Upvote for such comment.

I already mentioned once that as experiment I decided to write at least 10 comments on one day and all of them supposed to be not less than 50 words and of course with good content. I spent definitely about 4 hours. I was very satisfied with myself and then just made few hours break to see what happens. The result was the same like you say: Simple, thankful comment, cold and not personal.

Because it was experiment from my side I was not disappointed but I got just a confirmation no matter how much and how good you write a comment the feedback is often the same, then I just wonder why to spend so much time nad our brain jogging to think about such comments if people are not there for engagement?