It's gotten to the point that I just assume fans are either too young or too ignorant to educate themselves on depression, and/or other psychological problems, and how they *actually* work as opposed to the incorrect ways it's portrayed at large.

And, I think, no one cares about a trauma survivor unless that survivor is a woobie who is broken and needs to be "fixed" somehow, particularly in a stereotypically non-threatening state. Harry's rage is the exact opposite of that, so it can't/doesn't fit into fandom's fantasy fuel.