RWA's Pro status isn't awarded for getting a rejection. It is awarded for completing and submitting a manuscript to a publisher or agent. You do not have to produce a rejection letter to be a pro, you have to show proof that you submitted it. A return postcard will do the trick.

The Pro designation is useful within RWA in that there are workshop tracks at the national conference specifically for Pro members, and they're really good. There are Pro-only email loops at national and local levels, where the slightly more experienced writers can chat without having to deal with the inevitable newbie interruptions with questions on manuscript format and 'What's a query letter?'

I'm not and have never been a Pro, 'cause I'm published. But I've been involved in the Pro program at my chapter level, and I have to tell you, the Pro members tend to be the ones who have been around a while and know a little something. You might think it's silly, but getting the pin is just one little perk on what can be a very long road. Unpublished writers get so little validation, and if they can feel a spark of pride at being recognized for one step on the road to publication, why begrudge them? I don't understand why the Pro thing bothers people so much. If it's not your thing, just ignore it.