Kuch in his comments went out of his way to say this, which implies he thinks it and didn't say it because he was asked a dumb question.
Players peak has a bigger range these days, but saying Hagel has peaked already when he's 26 feels far fetched when he's been constantly improving season after season.
He'll have a 100 points season in the next couple of years, especially if he'll play with more offensive talented linemates than Cirelli and whoever filled the revolving door 2RW spot for Tampa this season