I'm amazed at how much "obvious to a human" spam has been getting through Gmail's spam filter for the past five years or so. It's a constant stream of scam pills, crypto scams, diet scams, etc., often marked "important according to Google magic"

I especially liked this "illuminati recruiting email" that notes "Some email providers incorrectly place official Illuminati messages in their spam / junk folder or promotion folder". Sure, some email providers might, but not Gmail!