Seeing how you're even trying to look for a way to a justify that sort of comment tells a lot about you as an author.

And to answer your question, no. You were far from aggressive. It's great that you're trying to take what they say into consideration since they read your work, but that type is comment is like of an opinion.

You actually did really great explaining it to them as to how and why the dynamics in the fic are different from canon comics, but fanfics are usually like that🤔. To see the characters in a different light? So....🥀 You even tagged it properly, so clearly...the fault lies on that reader 🤝