tip: arthur merlin words>1000 sort:hits
I'm sorry that person was rude to you. They were out of line. Maybe it would be helpful to check the author's existing replies to comments so you know for sure they'll be gracious? I know some authors don't reply to any comments at all, so this suggestion probably isn't helpful for their fics, but it would hopefully be a good indicator with others. I feel as though most authors are extremely grateful for the comments they receive, but I know that it can be hard to move past negative experiences.