It may be the opinion in military circles (and I can understand why) but I don't think it's a mainstream opinion. I think all most people really remember about Manning's leaks are the civilian murder videos.

I saw the footage. "Don't bring your kids to war" was probably wrong as it was they who brought the war to the kids but I think that was a just a human reaction when they knew they'd got it badly wrong. They lit up a van with the minigun like they often had to, easy to call it with a replay button y'know. Very sad about them in it and them doing it too. I don't think the crew were 'rage lets go kill us some randomers'. Unfortunately, it happens. What was the reason and justification for releasing the footage and then all those cables too?

What would concern me far more is that although a lot of highly illegal activity was exposed by other leaks, Snowden et al not a single person to date has actually had any form of legal sanction to my knowledge. They may as well have not bothered.

And fellow police members will sweep another police member planting evidence or torturing a suspect under the rug. Doesn't make it any more right. Just highlights that the whole organization is rotten.

Mil and ex-mil people might not like Manning because she made the military look bad.