OK I watched the thing 3 times. It is chocked full of inconsistent and conflicting info and comments.
Here are a few not mentioned so far.
No YOY present.
Gradual decline - inconsistent with overharvest.
People taking out fish by the hundreds without regard for size.
Used to catch 25-30 2.5 to 6 lb LMB every time in short period of time.
Obviously post spawn.
Fertile pond (said and shown).
It’s made for TV.
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Keep in mind he saw in person the entire event. We did not.
I did not hear them say no small BG. I saw a few mid size BG some skinny LMB some larger BG and I thought at least 1 LMB in decent condition.
IMO there is something else going on that we don't know about. There are at least some out of balance portions of the population.