You’re a mod now, enjoy it

You’re the new mod, have fun

At the moment of you writing this comment, the person in question had downvoted 3 of your comments and 4 of your posts over a span of months. Seems far from a pattern, but the following up and singling out of a particular user doesn’t look good. I’d suggest not focusing on who likes or doesn’t your content since the optics of an admin asking users the reasons for their votes is a very bad one.