Pretty much all of NFL history goes to show that successful young QBs have a strong ground game to help them get acquainted with the league. Undoubtedly, that begins with the offensive line, but you have to have talent at RB. I'm all for improving the OL, but someone decent has to run behind it.
Good QBs are supposed to elevate receiving talent. That doesn't mean not to give them any help, but the Bradys, Rodgers, even Mahomes of the world don't have their success predicated on how many first round picks are around them at WR.
Thats an old story told on television for a long time. For some time, certainly aided by rule changes, the tides have turned.
Today, the passing game makes and helps the running back and not the other way around.
Take Derrick Henry as an example. He started out relatively slowly, after being drafted 45th, with an 4,5 yards avg per attempt in his first and 4.2 yards avg per att in his second season with a relatively low workload. Just for comparisons sake, take Conners and Edmonds averages last year of 4,3 and 4,7 average yards per attempt. Henry followed this up with a stronger season and an 4.9 avg.
Then, during the 2019 season, Henry had an average of 3.9 yards per attempt through the first six games. His QB until half of game six of that season was Mariota. Then, Henrys production exploded.
Tannehill had his first start for Tennesse in game 7. From game 7 onwards, Henry averaged 5.9 yards per attempt for the rest of the season. In 2020, he averaged 5.4 yards per season.
You can have a look at any rb in the league. Prerequisite for their success and effectiveness (not totals) are a solid passing game. Thats not the case the other way around.
Lets look at the ten most effective runners (by avg/att) in the league and their qbs and wr:
1. Lamar Jackson Baltimore Hollywood Brown, Andrews, scheme
2. Kyler Murray Arizona Hopkins Kirk
3. JK Dobbins Baltimore Lamar, Brown, Andrews
4. Nick Chubb Cleveland Baker, Landry, Brown, Higgins, Hooper
5. Aaron Jones Green Bay Rogers, Adams, Valdez-Spalding
6. Derrick Henry Tennessee Tannehill, AJ Brown, Corey Davis, Jonnu Smith
7. Miles Sanders Philly
8. Ronald Jones Tampa Brady, Evans, Goodwin, Brown, Gronk, Miller
9. Dalvin Cook Minnesota Cousins, Thielen, Jefferson
10. Jonathan Taylor Indy TY Hilton, Pascal, Pittman
What have all of these rbs in common? Good qbs, some of the better olines and good receiving talent. Edit: with the exception of Philly.
Next example for a team with a young qb: Bills 2019 to 2020
Major changes from 2019 to 2020: addition of Stefon Diggs to Cole Beasley and John Brown