With SSB enabled you can see the name of who did the ping. If I'd use this exploit after dying then I can switch armies and make pings for another player - and everyone with SSB enabled would think it is that player that is doing the pinging / harassment.
Therefore another problem is that you can ping in the name of someone else - allowing you to harass someone without making it evident for the moderator team who really did the harassing. This works both ways: an observer can do the pinging and claim it was the player who was alive, or, a player that is alive can suddenly start pinging like a madman and claim it was the observer who recently died.
And last but not least - we're not the devil here. If the majority of the community thinks this fix isn't worth it then I'm sure we can revert it because in the end we're part of that same community. And we're doing all of this together.