Oh, sorry! xD It’s a literary concept! Basically, the author is “dead” the moment you read the story. TV Tropes explains it better than me lol:
[...] An author's intentions and biographical facts (the author's politics, religion, etc) should hold no special weight in determining an interpretation of their writing. This is usually understood as meaning that a writer's views about their own work are no more or less valid than the interpretations of any given reader. Intentions are one thing. What was actually accomplished might be something very different. The logic behind the concept is fairly simple: Books are meant to be read, not written, so the ways readers interpret them are as important and "real" as the author's intention.

To the people saying teens fuck all the time, I still think it shouldn’t be a reason. Cause while majority of the mha fandom is probably minors (so minors jacking off to minors is...well.. logical) the problematic thing is the artist , since they didn’t even bother aging them up and I doubt they are a minor too (〜 ̄△ ̄)〜 but I guess it’s not that deep? I don’t particularly think about the author when I’m reading something