I know we've been inundated with them lately... it seems like a member has a birthday everyday.
I guess I agree that they're stupid in the sense of not being productive... but I think what you're missing is that they're not supposed to have a point. It's supposed to provide an easy and effective (if ultimately superficial and pointless) way to show appreciation for a member.
Perhaps a seperate subforum should be created for these, though, since we have so many of them. And then people who don't like them could "opt-out" of viewing them.