Where are you getting your information? When you say 10,000 career yards, is that rushing yards or total/all purpose yards?
Eric ****erson was the fastest to 10,000 rushing yards in just 91 games. I don't think Henry has a shot at breaking that record or all purpose record considering he has already played in well more than 91 games.
Henry is in his 7th season and has already played 101 games and currently has 8,226 rushing yards and 1,225 receiving yards. So thru 101 games, Henry has 9,451 total (rushing/receiving) yards.
****erson, Emmit Smith, Barry Sanders, Adrian Peterson, LaDainian Tomlinson all had over 10,000 yards rushing by end of their 7th season. The receiving yards for each of these running backs were also much higher than what Henry has produced so far thru 7 seasons. And before somebody says anything about total games, I am well aware Henry only played in 8 games last year. Guess what, each of the players I listed above also missed a handfull of games throughout their first 7 season. Even if Henry plays a full season last year, he still well behind all those guys above in total yards.
There might be some other running backs I'm missing as well. I know Walter Payton had 9,600 rushing yards by end of 7th season and over 2,000 receiving yards.
Henry is a stud, no doubt, but he has a long way to go to be considered in the conversation of greatest all time running backs.