I'll take the bait
The reason why I was expecting success was because bait is in the eye of the beholder. Consecutively, fish that are typically labelled or have been labelled "bait" in North America, including shellfish.
-- Octopus/squid
-- Anchovy/herring/pilchard/smelt/oolichan/sardine
-- Lobster
-- Oyster
-- Chum and pink salmon
-- All carp
-- Any of the minnow family including suckers, pikeminnow, etc
-- Many people will not eat pike, goldeye, burbot/cusk, or catfish
Why I expected it to succeed is because I've eaten every one of the about minus lobster (which I've actually never eaten) to good and great effect if dealt with properly. I figured, for instance, that the vinegar would pickle the fish as per usual, and in a vinegar pickle, sucker is good; I didn't count on the tough skin brought on by the salt. Vagrey's recipe is a good one, but the fish weren't suited. Now you could say "I could have told you that." and you would have been correct, but I bet you couldn't have told me WHY the fish wasn't suited.
I get the concept of real fish. I've caught most of the species in western Canada salt and fresh except for catfish and halibut. I've eaten everything from the tiny herring to 35 lb spring salmon. I've eaten it raw, cooked, and pickled; cooked like the Natives do over a fire sans any seasoning, roasted, boiled, smoked, marinated, whatever. When a person sticks with big fish, it's like eating nothing but hotdogs. Big fish are easy and agreeable. And in truth, this has been the first honest disagreeable failure I've ever run into with cooking or prepping fish except for stuff I mucked up as a kid.
There's certainly a difference between caviar and bass roe, but that's part of the fun. Herring roe is crunchy, salmon roe are soft and oily.
It's like where you're at where half the people, so I've heard, won't eat wild pigs, or like hunters who don't hang their game. There's no point in sticking with the status quo unless the status quo exists for a good reason.