I'm pretty sure there were several of us on here who mentioned this very thing in the Cubs 2022 thread
My post from just after he went to the Cardinals:
kinda depends on how well you think he ages. I think the Cubs were smart to move on.
Considering that was the best contract he could get on the open market, seems many other teams agree.
One thing I'll be looking at is the STL staff ERA next year as compared to the last few years and the Cubs staff ERA compared to the last few years.
My belief is Contreras was so bad at game management that he made a noticeable difference in how many runs the Cubs gave up.
Also, you liked the post so I assume you agreed at the time lol