What's up with the bot accounts that just vaguely describe the article? Is it for karma farming accounts to sell on? I'm not opposed to bot accounts inherently

What's up with the bot accounts that just vaguely describe the article? Is it for karma farming accounts to sell on? I'm not opposed to bot accounts inherently but the stuff they so often post is just mind numbing to encounter, it feels like a little bit of my life has been stolen every time I get to the end of such a paragraph.