I don't think Fred would risk his reputation by dealing with unethically or illegally sourced roe.
What really surprises me is that he keeps selling chum roe at all, given the dire situation with their numbers.
In his place, I'd push artificials over roe - I'm sure he makes much, much more money on spoons, spinners, jigs, plastics, flies, and so on than on bags of roe, cured or not.
I was on the Squamish, Mamquam and Cheakamus today.
Where a few years back you couldn't wade the river without being bumped by chum salmon, it is ghost town this fall.