Eh, I don't think it is laughable at all. The Fab Five, in their freshmen year, were very good.
(pts/rebounds/assists)
Jalen Rose averaged 18/4/4
Chris Webber averaged 16/10/2
Juwan Howard averaged 11/6/2
Jimmy King averaged 10/3/2
Ray Jackson averaged 5/3/2
To compare:
RJ Barret is averaging 23/8/4
Zion Williamson is averaging 22/9/2
Cam Reddish is averaging 14/4/2
Tre Jones is averaging 9/4/5
Joey Baker (the weak link) is averaging... well...
But if you look at the numbers...
RJ > Jalen
Zion > Chris
Cam = Juwan
Tre either > (depending on how much you value assists) or = Jimmy
Joey < Ray
But beyond that simple comparison, beyond discussion of the relative strengths of teams and the era and all of that... it's pretty clear that, judging by the numbers and because people like to compare and because this Duke class is maybe the most impactful freshman class in a long time... well, I think you can absolutely compare the two. No matter which side you have coming out ahead, I certainly don't think it is laughable or hyperbolic.