Dunno.But begs the question 'why would bots need to follow anyone?'
How would that assist or benefit the bot?
Maybe it's a long-play scam.
Someone, in the near future posts a message about a stock that should be bought/sold, and the other bots reply supporting the initial post.
Theres some really interesting YT channels about scammers using fake "social validation" to coerce behaviour from others (real people).