That's a nice way to put it

With one important exception: through the 18th century, the most celebrated singers were castrati, boys altered before puberty who grew into men with powerful high voices. Un-altered tenors rarely got higher than an A without singing falsetto. Many of their roles were decidedly unheroic, like the slightly wimpy Don Ottavio in Mozart’s “Don Giovanni.” But the style was one of grace and agility. |link|