I'd still call it a somewhat small chance to be a major factor as a freshman.  For every Bosa and Clowney (top 50 talent who are major contributors as freshman), you have 10 noah Spences (top 50 talent with little to no impact as a freshman).  And even if Clowney is a major factor, those guys averaged roughly 1 TFL and 0.5 sacks per game.  Very good, but not to the level where they completely alter a game.  It's the MoC, the Adrian Petersons of the world who are elite as freshman that completely can change a game by themselves that are super rare.  Even if you are a top 50 talent it's going to be a rare case that you're one of those types.