I take the DC sub with somewhat a grain of salt on Wiedefeld. Ridership had been falling for a # of years before he joined WMATA, and a big part of his tenure was focused on addressing deferred maintenance, which was painful but necessary. I did think at times that he was conservative in his management as far as not exploring services that other transit agencies offer, like a Night Owl Bus service or late night weekend rail service. Then COVID hit and all bets were off.

FWIW, I think there's a heavy (and likely frustrating) political angle to being Metro GM & having to balance relationships/sometimes wrangle with the Feds, the Mayor of DC, and the governors of VA and MD. Wiedefeld seems like more of a technical person who probably didn't enjoy the political side of the job. Obviously, there will still be politics to deal with in his new role but he's going to have a lot of latitude to shape policy and he'll be well-supported by Moore and Miller, so perhaps a less intense dynamic compared to being head of WMATA. He never struck me as incompetent though.