Hopefully the delay is enforced at the server. Have you checked to see if opening 'link' in another tab defeats the restriction?
A. "I know this is sloppy and will be found out sooner or later, but I hope people will respect the restriction anyway."
B. "I know this is sloppy, but I hope nobody will find out."
C. "This isn't really sloppy, as I know full well the security implications and don't care about them at all."
D. Didn't really think about the implications.
Perhaps we could keep the 'link' exception, but just incorporate its use into the flagging algorithm (e.g. people who use it a lot get treated as if every comment they made has been flagged X times).