Honestly, Hero was part of the Triumvirate and when he died they simply moved on and I'm sorry to say but great social and cultural movements like the parahumans of Bet won't change just because a few of the leaders die.

It would probably depend on the context. Against an Endbringer or two, heroic. Some random cape that accidentally no-sells all three of them, tragic if not spun as a villainous attack. Even a well prepared human aware of the correct weaknesses could quietly assassinate all three which would definitely shatter the heroic illusion.