I do think on the whole it's a weak class. But I would still like to mention two things on that data.Ahead of the NFL draft, this is looking like the worst top of a draft class since 2019. I'm pretty sure that 2021 is the only draft that Mizelle has archived without a rookie in the top 24. This year, the highest rookie is currently at #25 overall and only 3 in the top 36.
You can look to NFL draft capital to change this in the coming months, but I think we are all going to be largely disappointed with both the depth and breadth of this class in 2-3 years.
http://mizelle.net/mfl/2021/
One is in actual FFPC startup drafts I am seeing Najee and Etienne in top 24.
But the other point I'd make about why things seem especially off this year is accounting for last years class. The 2020 class stocked up so much young talent it's kind of pushing everything back, I think that list you posted had 7 from last year in top 20 alone.
But again to your point I this class does not seem good and my takes on each position:
QB's-really strong so strength of this class for fantasy purposes is maybe a little different in one QB leagues vs SF leagues but I only play in the former and they barely register, good chance no first round QB's in those leagues and frankly I can't remember the last QB to go in round one of those leagues.
RB- weak at the top when I consider my #1 guy right now is 23 and I might not get any test results on him. Top 3 on the whole seem worse then most years top 3 and the 4+ much worse then most years.
WR-deep with solid players but everyone keeps telling me how great this draft is for WR's and I see mainly an army of slot WR's and potential WR2's. On the whole a solid WR class but I think the fantasy impact will be way less then people think.
TE- You got probably the best prospect ever and then TE's 2+ stack up as worst in memory vs other TE classes.