The point of Marvel superheroes is that they're real people with real problems; they're not perfect but they do try their best. Over time, editorial staff and writers have forgotten this somewhat, and made many of them into irrepentant douchebags in the name of edginess.
I think the researcher would agree with this to a large extent. Just look at the current Peter Parker - the post-OMD Spider-man was supposed to be more appealing to kids, and that somehow takes the form of drunken one night stands (later explained as Peter thinking he was drunk on apple juice) and breaking into hotel rooms to have sex with the Black Cat. I have a hard time not taking Lamb's point seriously when I see that. In some ways, I think she's making the same point as Millar's
Kick Ass does, although in a very different way.