As a developer of one of those bots, this depends on the types of posts. The bots like the World News bot that repost enough articles to provide content without saturating the community don’t cause problems and fit the purpose of a link aggregator. Bots reposting content that are meant to be engaged with directly, are missing context or are being posted too frequently for the local community to engage with are annoying. My bot is a high-volume poster like lemmit.online and I treat it like an read-only feed instead of something that is supposed to be a substitute for a real community, so it sits alone on its own instance and doesn’t try to hide the fact that it’s a reposting bot.