Okay, this helps me a lot. In essence, as someone using a 3PA, I represent 1 API, so for wildly successful 3PAs like Apollo, we're not talking 1000 API per minute, we're talking like 500k API per minute.
This is interesting also as it pertains to what you said about bots. When I used reddit for knitting and crochet, there was a bot that a community member had created that would reference a website that we all got patterns from, and then would generate a comment with a direct link to that pattern's page. In the lead up to the blackout, the bot's maintainer (not creator) was still in the dark about whether that bot would be shut down or not because reddit provided very little clarity when asked specifically about that bot. That bot was probably called up just a few dozen times per hour, so I imagine it would have been allowed to continue operating, whereas bots for AutoMods in subs with millions of subscribers were probably pulling huge numbers of API.