How prevalent are bots on lemmy?

Was on the other site when a commenter pointed out a response that and like 5 or 6 replies to that comment that were all bots. I am finally getting exposed to the concept of dead internet theory. So, how prevalent are bots on a place like lemmy? Are there natural safeguards against bots? I'm not an engineer and probably need a dumbed down explanation. But I did make it to lemmy! So I've got that going for me...