Well the "Jaws effect" isn't real, for starters. Jaws was part of a larger, older social phenomenon responsible for the public's increased interest in/fear of sharks. The outcome would've been the same even if Jaws had never been made.
Maybe a hot take but I think a lot of people learned about the effect Jaws had on Sharks and attempted to over-correct by going to far in the opposite direction. A modern creature feature horror is never going to have the impact Jaws did.