Half of the Twitter accounts pushing to 'reopen America' are bots, researchers

~24 hrs ago Researchers: Nearly Half of Accounts Tweeting About Coronavirus Are Likely Bots https://news.ycombinator.com/item?id=23255283

~24 hrs ago Nearly Half of the Twitter Accounts Discussing ‘Reopening America’ May Be Bots https://news.ycombinator.com/item?id=23258169

~24 hrs ago Researchers: Nearly Half of Accounts Tweeting About Coronavirus Are Likely https://news.ycombinator.com/item?id=23259645

~24 hrs ago Nearly half of Twitter accounts pushing to reopen America may be bots https://news.ycombinator.com/item?id=23261815

~14 hrs ago CMU Researchers: Nearly Half of Accounts Tweeting About Coronavirus Are Bots https://news.ycombinator.com/item?id=23268521

~46 mins ago Half of the Twitter accounts pushing to 'reopen America' are bots, researchers https://news.ycombinator.com/item?id=23274079

I wonder how many of these bots are purposefully pushing an agenda vs bots that might just track trending topics and tweet related things to gain followers/retweets maybe for advertising purposes? Has anyone analyzed other trending topics to see what proportion are bots?