You're 100% right. There are tons of bots on twitter spamming the same exact message over and over. Most aren't political. Try searching for "4k monitor", you'll find thousands of bot accounts tweeting the latest 4k monitor deals. It's a form of advertisement that leeches on twitter's service without paying twitter the usual advertising fee. Not sure why Twitter's ARMY of software developers can't figure this one out, but maybe the threat of a new boss with an eye for incompetence will get them to do some actual work on the issue.