I think you’re “in it”. I had a partner that loved fish sauce and insisted it didn’t taste “fishy”, but to me, who didn’t grow up with it and generally dislikes “fish” taste, it tastes extremely fishy.
IMO, fish sauce (and I'm picturing the red boat one my wife buys) is like manna from heaven when there's just a hint of it. Too much, and it starts to taste a little...poopy.