Dozens of what messages? Trivia questions itself are unique. There’s a pre-warning message that is sent out prior to the trivia post but it contains a time stamp at the bottom. In fact every message has a time stamp to give it a uniqueness. People were complaining that they didn’t have enough warning. I went back months ago and marked any duplicate messages as deleted. You have to follow the bot to see it’s posts so it’s not bothering others.
Discussion
I think most of these posts are old, you can see here: https://snort.social/search/The%20next%20round%20of%20Trivia%20Masters%20(beta)%20by%20%23%5B0%5D%20will%20begin%20in%201%20minute.%20Get%20yourself%20ready!%20Keeping%20the%20rewards%20lower%20until%20the%20kinks%20are%20worked%20out.%20The%20first%20correct%20answer%20will%20win%2010%20sats%20and%20a%20consolation%20prize%20of%203%20sats%20will%20be%20given%20to%20one%20other%20random%20participant.%20All%20bots%20will%20be%20disqualified.%20%23trivia%20%23plebchain
You might need to delete a char and add it back to refresh the screen if you don't see any posts.
The account is probably not in the spam folder until people go to the profile and the last 1000 messages are loaded. That's when all the duplications come and the app goes nuts.