I don't see how "ped" is necessarily an offensive abbreviation (though it's one that normally isn't used), so I don't think you're justified in believing that the commenter is trying to dehumanize the victim.

There are "PED XING" signs in the US for pedestrian crossings. I don't think it's considered disparaging.

https://www.google.com.au/search?q=ped+xing&source=lnms&tbm=...

As a non native speaker I'm reacting to the use of Ped as well, that paired with the obvious victim blaming that seems to be thrown around a lot, but to a much lesser extent here than in other forums discussing this issue.

Driving is a sensitive subject, people take it personal trying to do generalizations about drivers is just going to land you in a land of troubles, almost worse than profanity.