You're missing the point, which is to build the entire team strategically and not get enamored by the potential of a single player when so many positions on the team need help. There is much better value for running backs later in the draft, but less so at other positions. And RB is our one position of strength.
https://en.wikipedia.org/wiki/2008_Pro_Bowl#NFC_roster
I don't see Reggie on there. We had no Pro Bowl players in 2008.
And this isn't a hill I'm going to die on because Jeanty would be entertaining and the game IS about entertainment. I just think the RB position can be filled in a lot of different rounds if we wanted one this year and other positions get much thinner after the 1st round. If you're trying to build your team you have to prioritize not just players, but also positions where value is hard to find later.