Apparently you've never (knowingly) been shadowbanned by AutoMod. Deimorz (the guy you're responding to) created AutoMod when he worked at Reddit, and I can assure you that AutoMod is more than capable of removing all of your comments without you knowing (and the only way for you to know is to try to view your profile in incognito mode, or have someone else tell you that they can't see any of your comments).