The issue isn't how much risk there is in opening it. The problem is that regardless of how much or little risk there is in opening the link, it wasn't op's job to examine it. It was unnecessary risk to open the link.
I mean, it's not my job to refill the office coffee pot when I take the last cup of coffee, either, but since I'm decent to my coworkers I'd probably do it. Not the OP, but since I know how to open a malicious link safely in wget I would happily do that for similar reasons, and if I got reprimanded for it "not being my job"... I'd start looking for a new job where I'm respected for what I'm able to do.