I'm pretty sure Automod still needs some fine-tuning, as I also found myself recently caught by it for making a post with a bunch of community links in [email protected], which I happen to moderate. 😅
It was resolved quickly and I understood why it may have flagged it (lots of links! that's sus!), but that was enough of a tell to me that it's still being worked on. Your experience also suggests as much I think. Due to the nature of it I wouldn't expect too much clarity since they don't want to enable evading it, but hopefully they at least drop by to be like, "Yeah sorry, still a work-in-progress."
Edit:
Regarding the second post, that wasn't automod, that was one of us in General Discussion. Sorry about that, probably would have been better to point you here and lock it rather than remove it. I'll talk to them about that for future reference.