I think we should agree, though, that the flavour profiles of chicken and/or beef differ markedly from that of fish, yes? Barring stews, I've never observed that the bones of any small fish, eaten directly, are very flavourful.
Fish is a whole different.... um kettle of fish.
I do use shrimp shells for flavor in stocks, and bones and all that, but the solid stuff gets removed for a clear stock.
I may separate out the skin and fat and bones of beef for use in other stuff, but I never throw it away. I'll eat it somehow.
And yep. Tastes are never right or wrong. I can't see telling someone else what they should eat. That, to me, is the height of arrogance.
/johnny