So are you saying that the fishery is on its way down because 1)the walleyes are TOO BIG and 2)you cannot eat the fish you catch?
I may be misunderstanding your post, but if that is the case I say keep it coming! You can fish the other thousands of lakes in the state to attempt to catch eater walleyes, and on mille lacs or any nearby lakes you can find abundant panfish that are delicious in the fry pan. IMO if you have a resource with incredible fish, a true fisherman will appreciate it with or without the opportunity to eat them. I would much rather catch big fish I have to release than see the walleyes get smaller (and then progressively less numerous as more get eaten). I am 19 so have minimal exp, but 3 of the 4 biggest walleyes of my life came on Mille Lacs ice fishing for ONE WEEKEND last winter and i wouldn’t have traded a single one of those memories for a 17 in eater i chase around all summer. .. sorry for the long post, not attempting to be rude.. just my honest opinion.