Consequences of gerontocracy
The Democrats decided that seniority was more important than ability or energy in putting their people onto these committees. AOC wanted to chair this committee, but she was pushed aside for a member in his 70s who had done his time. He has now stepped down due to his cancer reemerging.
AOC would have been very good and would had done great work holding the current lawless administration to account. The Republicans under the last regime demonstrated the power of this committee by pushing around many of the administration's appointees. Unfortunately, the Democratic party are just a sideshow to the bigger clown show happening now.