Except this doesn't apply at all here. We are not discussing a generic hero or the hero concept in general. This is about a very specific character, Batman, and the creative vision for him specifically.

What makes me even more confused about this argument is that there already in the comments above someone brings out Captain America while another chimes in that there are heroes who are not defined by their tragedies. Which is legitimately good, but it also raises the question that what then is the issue here? Why can't Batman be defined as a tragic figure? Or is the stance that real heroes are defined by their happy, wholesome lives?