Deserves? What did it do to earn that PB?
It has its niche of being the one mag to get the most customizable stats. If you want PBs, why not use another mag? Not only this, but there were some positions to where I preferred to not have PBs -- when using a mag with them I'd use TJS when I could solely for the reason that they wouldn't activate.
While you may see it as useless, there are some people who think it is a fair trade-off (or even the fact that it doesn't have them at all is attractive) and seeing as it is the only one which is in this situation (aside from the mags which are based on mark3 anyway) I feel it should be left as it is. Really, if the trade-off isn't worth it to you, what is stopping you from using a different mag?