I'm talking about their cap situation....teams tend to fall back down to Earth when a HOF QB retires lol.
The Cardinals aren't flush with RB talent because they haven't used the draft capital besides David Johnson...which proves my point!!!!
Regardless, they're not "just fine." They're unlikely to be a playoff team, and have many years of probable rebuilding ahead of them, barring Jameis suddenly becoming elite with Payton's coaching. I don't know what else you mean by "just fine" unless you think I thought they or we in the future are going to be barred from playing in the league because of a cap situation.
My point is, we're bottom five in how full our roster is, we don't have a particularly large amount of talent on the team, and we have very little money to handle that problem with the looming contract on the horizon.
Also, let's take a look at round 3 RBs and how great they've been in the past six years, to see if "a top RB can be a round 3 pick next year." I'll star the guys making real impacts.
2021:
Trey Sermon - TBD, but won't start
2020:
Ke'Shawn Vaugn - 3rd stringer
Zack Moss - Maybe the starter? He's hurt though.
Darrynton Evans - Will barely see the field
2019:
Darrell Henderson - Only the starter due to injury, was replaced after year one
*David Montgomery - The first example of a good RB on this list
*Devin Singletary - Probably more credit than he's deserved given he's in a timeshare
Damien Harris - Has potential but was a complete wash year one
2018:
Royce Freeman - Non-factor to probably get released or traded, team signed a pricey FA
2017:
*Alvin Kamara - Legit star
*Kareem Hunt - Kinda half of a star deserved here because he let his team down
D'Onta Foreman - Non-factor
*James Conner - I'll give him a star but he was a non-factor as a rookie and then mediocre besides 2018
2016:
Kenyan Drake - Some flashes but ultimately not a starting caliber player for Miami (or us)
C.J. Prosise - Non-factor
So... out of 15 guys in six years, five guys have been legit players. Only 3 have had 1,000 yard seasons (although Kamara deserves a shout out for his passing game accomplishments).
The success rate isn't as high as you seem to think. It's not just a plug and play scenario. Especially when you consider that the successful rookies in that list are basically just Hunt and Kamara.