Todd--It's basically a pre-emptive move, and something like a dozen other states have taken similar steps (our amendment here in S. C. passed big-time yesterday). It's doesn't totally cast things in concrete, but it does serve to make anti-fishing and anti-hunting forces have additional barriers to surmount in their ongoing attack on these rights. If you want scads more detail, go to the National Shooting Sports Foundation's web site or do some other Internet research.
Oddly enough, your argument or concern is almost precisely the one our highly liberal local newspaper used in coming out in opposition to the amendment.
I follow these things pretty closely, and anyone who thinks our sporting rights aren't under assault isn't apying enough attention.