There has been plenty of questioning Shildt’s moves this year but, agree to get to this point he is doing the right things.
Matheny certainly had his moments but, he had a fair amount of success too. LCS’s, WS, win 100 games. His last couple of years didn’t get to the playoffs but, we weren’t buried at the bottom of the division either.
Shildt had a bad series, but he's much more likely to listen and learn from that than the dullard Matheny was. In 2014, Matheny brought in Wacha, who hadn't pitched in a month and was hurt, for the deciding inning in game 5 of the 2014 NLCS. And he was only the 3rd pitcher in the game, it's not like this was the 18th or something. That was, by far, the worst instance of managing in the playoffs I can remember.
It's no coincidence that every time the Cardinals bowed out of the playoffs under Matheny, it was due to 3 straight losses. Matheny panicked, did dumb stuff, and lost the team every year.