I don’t think fishery managers make regulations on comparative evidence.
In my opinion, 4 fish is plenty for an angler. I think the lakes that see all these guides bringing clients to the same spot, day after day, filling livewells with 24 fish from May through July would see the most relief. Many lakes can in fact support that. I know of many that cannot also. I don’t tell people how or what they should do with their fish, but Ive never scoffed at 4 walleye.