if an RSS bot posts an article, a human is not going to post it again

I reject your premise, on the basis that it seems like basically every article, worth reading or not, is posted repeatedly (by humans) over the span of a day or two anyway.

Of course, I block the bot accounts, so if there are interesting articles that aren't being re-posted, I can't see them, but... I'd say my Lemmy experience is considerably better even with the presumed reduction in content.

To directly answer your question, even if I could see them, I wouldn't engage with bot account posts.