Not sure if I just missed it, but I don’t recall ever seeing a subreddit for this. I absolutely adore automation games and it’s great to see people discussing and recommending them!
Btw I really recommend Infinifactory (and all other games made by the same dev), they really scratch that itch in bite sized amounts for when you’re too daunted by large projects like factorio and co
I used to check out the automation games general on /vg/ but I never really found a similar community on reddit